Do you think crystals formed in conditions that were stable or did they change often?

Answers

Answer 1

Answer:

They were made in unstable conditions

Explanation: Im smarty pants


Related Questions

How many grams are there in 1.70 moles of KMnO4?

Answers

Answer:

269g

Explanation:

hope this helps you

Answer: 269 g
Explanation: since we want moles>grams you would multiply the given by the molar mass of the element divided by one.So 1.70*158/1=269 grams

An unknown compound is processed using elemental analysis and found to contain 117.4 g of platinum, 28.91 g of carbon, and 33.71 g of nitrogen. How many moles of platinum are present in the compound? Need help ASAP

Answers

Answer:

1 mole of platinum (Pt).

Explanation:

From the question given above, the following data were obtained:

Platinum (Pt) = 117.4 g

Carbon (C) = 28.91 g

Nitrogen (N) = 33.71 g

Number of mole of platinum =?

To obtain the number of mole of platinum present in the compound, we shall determine the empirical formula for the compound. The empirical formula for the compound can be obtained as follow:

Pt = 117.4 g

C = 28.91 g

N = 33.71 g

Divide by their molar mass

Pt = 117.4 /195 = 0.602

C = 28.91 /12 = 2.409

N = 33.71 /14 = 2.408

Divide by the smallest

Pt = 0.602 /0.602 = 1

C = 2.409 /0.602 = 4

N = 2.408 / 0.602 = 4

Therefore, the empirical formula for the compound is PtC₄N₄ => Pt(CN)₄

From the empirical formula for the compound (i.e Pt(CN)₄) we can see that the compound contains 1 mole of platinum (Pt).

When of a certain molecular compound X are dissolved in of benzene , the freezing point of the solution is measured to be . Calculate the molar mass of X. If you need any additional information on benzene, use only what you find in the ALEKS Data resource. Also, be sure your answer has a unit symbol, and is rounded to the correct number of significant digits.

Answers

The question is incomplete. Here is the complete question.

When 2.10 g of a certain molecular compound X are dissolved in 65.0 g of benzene (C₆H₆), the freezing point of the solution is measured to be 3.5°C. Calculate the molar mass of X. If you need any additional information on benzene, use only what you find in the ALEKS Data resource. Also, be sure your answer has a unit symbol, and is rounded to 2 significant digits.

Answer: MM = 47.30 g/mol.

Explanation: There is a relationship between freezing point depression and molality. With this last one, is possible to calculate molar mass or molar weight of a compound.

Freezing Point Depression occurs when a solute is added to a solvent: the freezing point of the solvent decreases when a non-volatile solute is incremented.

Molality or molal concentration is a quantity of solute dissolved in a certain mass, in kg, of solvent. Its symbol is m and it's defined as

[tex]m=\frac{moles(solute)}{kg(solvent)}[/tex]

Freezing point depression and molal are related as the following:

[tex]\Delta T_{f}=K_{f}.m[/tex]

where

[tex]\Delta T_{f}[/tex] is freezing point depression of solution

[tex]K_{f}[/tex] is molal freezing point depression constant

m is molality

Now, to determine molar mass, first, find molality of the mixture:

[tex]\Delta T_{f}=K_{f}.m[/tex]

[tex]m=\frac{\Delta T_{f}}{K_{f}}[/tex]

For benzene, constant is 5.12°C/molal. Then

[tex]m=\frac{3.5}{5.12}[/tex]

m = 0.683 molal

Second, knowing the relationship between molal and moles of solute, determine the last one:

[tex]m=\frac{moles(solute)}{kg(solvent)}[/tex]

[tex]mol(solute)=m.kg(solvent)[/tex]

mol(solute) = 0.683(0.065)

mol(solute) = 0.044 mol

The definition for Molar mass is the mass in grams of 1 mol of substance:

[tex]n(moles)=\frac{m(g)}{MM(g/mol)}[/tex]

[tex]MM=\frac{m}{n}[/tex]

In the mixture, there are 0.044 moles of X, so its molecular mass is

[tex]MM=\frac{2.1}{0.044}[/tex]

MM = 47.30 g/mol

The molecular compound X has molecular mass of 47.30 g/mol.

What is the relationship between potential and kinetic energy?*
As potential energy increases, kinetic energy increases.
O As potential energy increases, kinetic energy decreases.
As potential energy decreases, kinetic energy decreases.
O Potential and kinetic energy are two separate things and have no relationship.

Answers

Answer:

As potential energy increases, kinetic energy decreases

It's an inverse relationship

The energy stored in an object is called potential energy
True or false​

Answers

its true

Potential energy is the stored or latent energy in an object at rest. It’s fundamental to many physics-related concepts because its laws hold true on any level, from the planetary to the atomic level. The potential energy of an object is measurable.

Which statement correctly compares electric charge with electric current?

A: They both require a human to make them.


B: Neither require charged particles.


C: They both require a battery and a bulb.


D: They both require a movement of charged particles.

Please help

Answers

Answer:

D

Explanation:

i have no explanation ;-;

I checked it with my quiz doe UwU[tex]e[/tex]

Mg(s)+2HCl(aq)  →  MgCl2(aq)+H2(g)
In an experiment, a student places a small piece of pure Mg(s) into a beaker containing 250.mL of 6.44MHCl(aq). A reaction occurs, as represented by the equation above. The student collects the H2(g) produced by the reaction and measures its volume over water at 298 K after carefully equalizing the water levels inside and outside the gas-collection tube. The volume is measured to be 45.6mL. The atmospheric pressure in the lab is measured as 765 torr, and the equilibrium vapor pressure of water at 298 K is 24 torr.
Calculate the following.
(i) The pressure inside the tube due to the H2(g)
(ii) The number of moles of H2(g) produced in the reaction
What is the answer and why?

Answers

Answer:

741 torr

0.81 moles of H2

Explanation:

Given the reaction equation;

Mg(s)+2HCl(aq)  →  MgCl2(aq)+H2(g)

We can obtain the pressure of the gas at 298 K using Dalton's law of partial pressures.

Pressure of gas + vapour pressure of water = 765 torr

vapour pressure of water = 24 torr

765 torr -  vapour pressure of water = Pressure of gas

Pressure of gas = 765 torr - 24 torr = 741 torr

From the question we have;

number of moles of HCl reacted = Concentration * volume

number of moles of HCl reacted = 250/1000 * 6.44 = 1.61 moles

If

2 moles of HCl yields 1 mole of H2

1.61 moles of HCl yields 1.61 * 1/2 = 0.81 moles of H2

what is heat transfer?

A. The transfer of heat from a colder object to a warmer one
B. The transfer of heat from a warmer object to a colder one

Answers

It’s b The transfer of heat from a warmer object to colder one

(will give brainliest!! please help me! thank you!)

a) The rows on the periodic table are called periods. How many energy levels are in the atoms of each element in period 2 (lithium-neon)

b) What is the group number of the halogens?

c) What do the elements in each group have in common?


please please help me, i will give brainliest

Answers

Answer:

A two energy levels K and L

B halogen are present in group 17

C in same group elements have same valence electrons

Explanation:

what is the electron configuration for Na?

Answers

1s22s22p63s1. That's the ans

A reaction between liquid reactants takes place at in a sealed, evacuated vessel with a measured volume of . Measurements show that the reaction produced of sulfur hexafluoride gas. Calculate the pressure of sulfur hexafluoride gas in the reaction vessel after the reaction. You may ignore the volume of the liquid reactants. Round your answer to significant digits.

Answers

Answer:

0.41 atm

Explanation:

A reaction between liquid reactants takes place at 10.0 °C in a sealed, evacuated vessel with a measured volume of 5.0 L. Measurements show that the reaction produced 13. g of sulfur hexafluoride gas. Calculate the pressure of sulfur hexafluoride gas in the reaction vessel after the reaction. You may ignore the volume of the liquid reactants. Round your answer to 2 significant digits.

Step 1: Given data

Temperature (T): 10.0 °CVolume of the vessel (V): 5.0 LMass of sulfur hexafluoride gas (m): 13. g

Step 2: Convert "T" to Kelvin

We will use the following expression.

K = °C + 273.15

K = 10.0 °C + 273.15 = 283.2 K

Step 3: Calculate the moles (n) of SF₆

The molar mass of SF₆ is 146.06 g/mol.

13. g × 1 mol/146.06 g = 0.089 mol

Step 4: Calculate the pressure (P) of SF₆

We will use the ideal gas equation.

P × V = n × R × T

P = n × R × T/V

P = 0.089 mol × (0.0821 atm.L/mol.K) × 283.2 K/5.0 L = 0.41 atm

first response gets brainliest

Answers

Answer: I believe that it is Incorrect.

1. Consider Reactions 3 and 14 studied in this lab. Write the balanced molecular equation (identical to what you completed in the previous section), the complete ionic equation and the net ionic equation for these reactions. Include all physical states, and circle the spectator ions in the complete ionic equations.
Reaction 3: Aqueous sodium phosphate + aqueous copper(II) sulfate
Balanced Molecular Equation
(from page 1): Complete
Ionic Equation:
Net Ionic Equation:
Reaction 14: Aqueous iron(III) chloride + aqueous ammonium hydroxide
Balanced Molecular Equation
(from page 3): Complete
Ionic Equation:
Net Ionic Equation:
2. Predict the products for the following single and double displacement reactions, and write balanced molecular equations including physical states) for each of them. If you predict that no reaction will occur, write "NR", followed by a brief explanation.
A. Aluminum metal + aqueous silver acetate
B. Aqueous zinc nitrate + aqueous lithium chloride
C. Hydrobromic acid + solid magnesium sulfite
D. Aqueous rubidium hydroxide + perchloric acid
E. Tin metal + phosphoric acid
F. Aqueous lithium chromate + aqueous gold(111) iodide

Answers

Answer:

See explanation

Explanation:

For reaction 3;

Molecular equation

2Na3PO4(aq) + 3CuSO4(aq) -----> 3Na2SO4(aq) + Cu3(PO4)2(s)

Complete ionic equation;

6Na^+(aq) + 2PO4^3-(aq) + 3Cu^2+(aq) + 3SO4^2-(aq) ------> 6Na^+(aq) + 3SO4^2-(aq) + Cu3(PO4)2(s)

Net ionic equation;

3Cu^2+(aq) + 2PO4^3-(aq)  -----> Cu3(PO4)2(s)

Reaction 14

Molecular equation

2FeCl3(aq) + 6NH4OH(aq) ------>2Fe(OH)3(s) + 6NH4Cl

Complete ionic equation:

2Fe^2+(aq) + 6Cl^-(aq) + 6NH4^+(aq) + 6OH^-(aq) -----> 2Fe(OH)3(s) + 6NH4^+(aq) +  6Cl^-(aq)

Net ionic equation;

2Fe^2+(aq) +  6OH^-(aq)  -----> 2Fe(OH)3(s)

2.

Al(s) + 3Ag(CH3COO)(aq) ----->Al(CH3COO)3(aq) + 3Ag(s)

Zn(NO3)2(aq) +2LiCl(aq) ------> 2LiNO3(aq) + ZnCl2(aq)

2HBr(aq) + MgSO3(s) ------>MgBr2(aq) + H2O(l) + SO2(g)

RbOH(aq) + HClO4(aq) -----> RbClO4(aq) + H2O(l)

3Sn(s) + 4H3PO4(aq)----->Sn3(PO4)4(aq) + 6H2(g)

3Li2CrO4(aq) + 2AuI3(aq) -------> 6LiI(aq) + Au2(CrO4)3(s)

How many grams are in 3.21 x 1024 molecules of potassium hydroxide?

Answers

Answer:

3287.04 grams

Explanation:

The mass of 3.21 × 10²⁴ molecules of potassium hydroxide is equal to  298.5 g.

What is Avogadro's number?

Avogadro’s constant can be explained as the proportionality factor that can be used to count the number of particles such as molecules, atoms, or ions in a given sample with a definite amount of substance.

Avogadro's number can be described as the approximate number of nucleons in 1 gram of substance. The value of the Avogadro constant can be expressed as the mass of one mole of a compound, in grams.

The value of Avogadro’s number is found about 6.022×10²³ mol⁻¹.

Given, the number of molecules of the KOH = 3.21 × 10²⁴

The mass of the one mole of KOH = 56 g/mol

The 6.022 × 10²³ molecules of KOH has mass = 56 g

The mass of 3.21 × 10²⁴ molecules of KOH = 56×(3.21× 10²⁴/6.022 × 10²³)

= 298.5 g

Learn more about Avogadro's number, here:

brainly.com/question/11907018

#SPJ2

What volume (in L) of water vapor will be
produced from the reaction of 24.65 L of oxygen?
2C2H6(9) + 702(9) — 4CO2(g) + 6H20(9)
Enter

Answers

Answer:

21.13 L

Explanation:

Step 1: Write the balanced equation

2 C₂H₆(g) + 7 O₂(g) ⇒ 4 CO₂(g) + 6 H₂O(g)

Step 2: Determine the appropriate volume ratio

Since all the gases are in the same container at the same temperature and pressure, the volume ratio is equal to the molar ratio, because the volume depends on the number of moles. The volume ratio of O₂(g) to H₂O(g) is 7:6.

Step 3: Determine the volume of H₂O produced from 24.65 L of O₂

24.65 L O₂ × 6 L H₂O/7 L O₂ = 21.13 L H₂O

In a hotel breakfast bar, you see an older woman sticking a fork into a toaster to remove a piece of toast. You warn her not to do that, and she says, "You know, I always wondered why forks conduct electricity so well." As an astute chemistry student, how would you explain it to her? Make sure you provide a relationship to electronegativity, proton pull, and electron distribution in your answer.

Answers

Answer:

See explanation

Explanation:

You see, all these materials we see around us are composed of elements. These elements are unique in their own ways!

Some of them are able to attract tiny negative particles called electrons close to their positive interior called the nucleus. This positive interior is so designated because it contains a positive particle called protons which attract these electrons.

Now, elements are broadly divided into metals and non metals. Protons in metallic elements are less able to pull electrons than protons in non metallic elements. As a result of this, non metals are mostly electronegative because they pull electrons towards themselves while metals are mostly electropositive because they give away their electrons easily. Fork is composed of metallic elements.

Since metals give away electrons easily, they can conduct electricity since electrons are the same charge carriers in electric circuits.

Also, in elements, there is a conduction band and a valence band. Electrons  occupy the valence band but also move into the conduction band. The gap between the valence band and the conduction band in nonmetals is large hence they do not conduct electricity. The gap between the valence band and the conduction band in metals is minimal hence metals conduct electricity.

So if you stick that fork into a toaster, electrons can flow right through the toaster circuit into your body and cause you to be electrocuted.

What observations did you make during the animation from Interphase back to interphase again?

Answers

Answer:

=> Production of protein occurs at interphase.

=> The interphase stage is longer than the four stages of mitosis.

Explanation:

There are three things that one has to understand in cell division and they are; the interphase stage, the four mitosis stages and the cytokinesis.

The interphase stage is the growing stage and it is really not part of mitosis. The interphase stage can be said to be the "resting stage" for cell division. The interphase stage consist of the G1(production of protein occurs here), S( this is the chromosome replication) and G2 ( for further growth).

The four stages of Mitosis are; prophase, metaphase, Anaphase and Telophase. These four stages shows how or the steps involved in the fomation of two new daughter chromosome in a cell.

Cytokinesis is the stage following mitosis and it is the division of the cell membrane into two new cells

In the United States, barometric pressures a re generally reported in inches of mercury (in. Hg). On a beautiful summer day in Chicago, the barometric pressure is 30.45 in. Hg. Convert this pressure to torr.

Answers

Answer:

773.43 torr

Explanation:

From the question given above, the following data were obtained:

Pressure (in inHg) = 30.45 inHg

Pressure (in torr) =?

We can convert 30.45 inHg to torr by doing the following:

1 inHg = 25.4 torr

Therefore,

30.45 inHg = 30.45 inHg × 25.4 torr / 1 inHg

30.45 inhg = 773.43 torr

Thus, 30.45 inhg is equivalent to 773.43 torr

balance this equation: Al+ HNO3 ---- H2 + Al(NO3)3​

Answers

Answer:

2Al+ 6HNO3 ---- 3H2 + 2Al(NO3)3​

Explanation:

Put coefficient a,b,c, and d for calculation:

a Al + b HNO3 = c H2 + d Al(NO3)3

for Al: a = d

for H: b = 2c

for N: b = 3d

for O: 3b = 9d

Suppose a=1, then d=1, b=3, c=3/2

multiply 2 to make all natural number, a=2, then b=6, c=3, d=2

A solid piece of lead has a mass of 32.00 g and a volume of 2.84 cm^3. From these data, calculate the density of lead in SI units (kilograms per cubic meter).

Answers

Answer:

11267.61 Kg/m³.

Explanation:

From the question given above, the following data were obtained:

Mass of lead = 32 g

Volume of lead = 2.84 cm³

Density of lead =.?

Next, we shall convert 32 g to Kg. This can be obtained as follow:

1000 g = 1 Kg

Therefore,

32 g = 32 g × 1 Kg / 1000 g

32 g = 0.032 Kg

Next, we shall convert 2.84 cm³ to m³. This can be obtained as follow:

1 cm³ = 10¯⁶ m³

Therefore,

2.84 cm³ = 2.84 cm³ × 10¯⁶ m³ / 1 cm³

2.84 cm³ = 2.84×10¯⁶ m³

Finally, we shall determine the density of the piece of lead. This can be obtained as follow:

Mass of lead = 0.032 Kg

Volume of lead = 2.84×10¯⁶ m³

Density of lead =.?

Density = mass / volume

Density of lead = 0.032 / 2.84×10¯⁶

Density of lead = 11267.61 Kg/m³

Problem 3 A sample of 2.37 moles of an ideal diatomic gas experiences a temperature increase of 65.2 K at constant volume. (a) Find the increase in internal energy if only translational and rotational motions are possible. (b) Find the increase in internal energy if translational, rotational, and vibrational motions are possible. (c) How much of the energy calculated in (a) and (b) is translational kinetic energy?

Answers

Answer:

a) the increase in internal energy is 3211.78 J

b) dU = 3854.14 J

c) dU[tex]_{T}[/tex] = 1927.06 J

Explanation:

Given the data in question;

Foe a diatomic gas, the degree of freedom are as follow;

lets consider the positional degree of freedom

transitional df = 3

rotational df = 2

vibrational ff = 1

now, the internal energy given by;

U = Nf × 1/2NKT = Nf×1/2×nRT

where Nf is the number of degree of freedom

N is Number of atoms or molecules

n = number of molecules

L is Boltzmann constant

R is universal gas constant

so change in internal energy , change in T is given by

dU =  Nf × 1/2 × nT dT

n = 2.37 moles

dT = 65.2 K

R = 8.314 J/mol.J

a)

Find the increase in internal energy if only translational and rotational motions are possible

since rotational and transitional motion are involved ;

Nf = 3(trasitional) + 2(rotational) = 5

so,

dU = 5 × 1/2  × nRdT

we substitute

dU = 5 × 0.5  × 2.37 × 8.314 × 65.2

dU = 3211.78 J

Therefore, the increase in internal energy is 3211.78 J

b)

Find the increase in internal energy if translational, rotational, and vibrational motions are possible.

Nf = 3 + 2 + 1 = 6

dU = 6 × 1/2  × nRdT

dU = 6 × 0.5  × 2.37 × 8.314× 65.2

dU = 3854.14 J

c)  

How much of the energy calculated in (a) and (b) is translational kinetic energy?

dU[tex]_{T}[/tex] = 3 × 0.5  × 2.37 × 8.314 × 65.2

dU[tex]_{T}[/tex] = 1927.06 J

Atom 1 has 19 electrons 19 protons and 20 neutrons atoms 2 has 19 electrons , 20 neutrons and 19 protons

Answers

Answer:

Atom 1: Potassium (K)

Atom 2: Same thing

Explanation:

Potassium has an atomic number of 19 and mass number of 39.0983.

PLZ HELP I WILL GIVE BRAINLISTS TO RIGHT ANSWER

2KCIO3 → 2KCI+ 302
How many moles of oxygen are produced by the decomposition of 5.0 moles of potassium chlorate?

A )7.5 mol O2
B )5.0 mol O2
C )2.5 mol O2
D )9.0 mol O2

Answers

..........The answer is B

which of the following describes all of the types of water found in the hydrosphere

Answers

Answer: all of the water on the Earth

Explanation:

The hydrosphere is made up of all the water that we have on Earth. Included in the hydrosphere are the water that we have underground, those in the Earth's surface, and those that we have in the air.

On Earth, we can find water in the seas, lakes, oceans, streams, rivers etc. Water also comes in form of rain as well.

(?

Manipulate the settings to model the scenario. Observe what happens to the objects in the stream. Record your

observations in the Lab Guide,

Stream Slope

Gentle

Amount of Rainfall

None

Surrounding Terrain

Plain

Mountains

Check

Pause

Answers

Answer:

It causes erosion of the land and stones.

Explanation:

if the objects such as stones etc are present in the way of stream so the stones are eroded due to its fast flowing due to sloppy nature. If the stream is flat  then it little disturb the things present in its way because of its lower speed. If more rainfall occur the streams flows in higher speed and destroy everything that comes in its way and also affected the plains.

Answer:this is correct

Explanation:

Identify the correct statement regarding the mole. a. A mole of oxygen gas contains 6.02 1023 atoms. b. A mole of chlorine gas contains 2 6.02 1023 atoms. c. A mole of carbon dioxide contains two moles of oxygen molecules. d. A mole of ammonia gas (NH3) has a mass of 34.0 g. e. A mole consists of the number of particles in exactly 12 g of naturally occurring carbon.

Answers

Answer:

b. A mole of chlorine gas contains 2 (6.02 * 10^23 ) atoms.

c. A mole of carbon dioxide contains two moles of oxygen molecules (CO2)

e. A mole consists of the number of particles in exactly 12g of naturally occurring carbon.

Explanation:

A mole of oxygen gas (O2) contains 2 (6.02 * 10^23) atoms

A mole of Ammonia gas (NH3) has a mass of 17.031g/mol

A mole is defined as the unit used in measurement of the amount of substances in the International System of Units.

A mole was initially defined as the number of particles in exactly 12g of naturally occurring carbon.

Therefore, options b, c and e are correct

1. Describe how you can use the graduated cylinder to determine the volume of a small, irregularly-shaped metal. 2. What safety precaution should you take when adding the irregularly-shaped metal into the glass graduated cylinder

Answers

Explanation:

1.

i. Measure the initial volume of water in a graduated cylinder.

ii. Now submerge the irregularly shaped metal into water in a graduated cylinder.

iii. Measure the final volume of water.

iv. The difference between the final volume and the initial volume is the volume of the irregularly shaped metal.

2.

When adding the irregularly shaped metal into the glass graduated cylinder. Make sure that the irregularly shaped metal is completely submerged into the water.  

In biology class, we had to______ the parts of a plant cell under a microscope.

Answers

Answer:

In biology class we had to look at the parts of a plant in a microscope

g Aqueous hydrobromic acid will react with solid sodium hydroxide to produce aqueous sodium bromide and liquid water . Suppose 57.4 g of hydrobromic acid is mixed with 41. g of sodium hydroxide. Calculate the minimum mass of hydrobromic acid that could be left over by the chemical reaction. Be sure your answer has the correct number of significant digits.

Answers

Answer:

Zero

Explanation:

The complete reaction for this is as follows -

HBr + NaOH = NaBr + H2O

1 mole of NaOH reacts with 1 mole of HBr

m(HBr) = 57.4g and M(HBr) = 80.9g/mol

m(NaOH) = 16g and M(NaOH) = 40g/mol

Number of moles = m/M

Substituting the given values we get -

n(HBr) = 57.4 g/80.9 g/mol = 0.709

n(NaOH) = 16 g/40 g/mol = 0.4

n(H2O) = n(NaOH) = 0.40 mol

According to balanced equation

40 gram of NaOH reacts with 81 grams of HBr

41 gram of NaOH will react with 81/40 * 41 = 83.025 gram of HBr

We have only 57.4 g of HBr only hence, 0 HBr will be left.

A 100.0 mLflask is filled with 0.065 moles of A and allowed to react to form B according to the reaction below. The following experimental data are obtained for the amount of A as the reaction proceeds. What is the average rate of appearance of B in units of M/s between t = 10.0 min. and t = 30.0 min.? Assume that the volume of the flask is constant.

Answers

The question is incomplete. The complete question is :

A 100.0 mL flask is filled with 0.065 moles of A and allowed to react to form B according to the reaction below. The following experimental data are obtained for the amount of A as the reaction proceeds. What is the average rate of appearance of B in units of M/s between t = 10 min. and t = 30 min.? Assume that the volume of the flask is constant. A(g) → B(g)

Time 0.0 10.0 20.0 30.0 40.0

Moles of A 0.065 0.051 0.042 0.036 0.031

Solution :

Consider the following reaction as follows :

[tex]$A \rightarrow B$[/tex]

The experiment data is given as follows :

Time (min) :   0.0        10.0       20.0        30.0       40.0

Moles of A :  0.065    0.051    0.042      0.036     0.031

According to the rate of reaction concept, the rate can be expressed as a consumption of the reactant and formation of the product as follows :

Average rate : [tex]$= -\frac{d[A]}{dt} = \frac{d[B]}{dt} $[/tex]

Now we have to calculate the average rate between 10.0 to 30.0 min w.r.t. A as follows :

Rate  [tex]$=-\frac{(0.051-0.036) mol \times \frac{1}{0.1 \ L}}{(30.0-10.0) mol \times \frac{60 \ s}{1 \ min}}$[/tex]

         [tex]$=\frac{0.15 \ M}{20 \ min \times \frac{60 \ s}{1 \ min}}$[/tex]

         [tex]$= 1.25 \times 10^{-4 }\ M/s$[/tex]

Therefore, the rate = [tex]$= 1.3 \times 10^{-4 }\ M/s$[/tex]

A 100.0-mL flask is filled with 0.065 moles of A and allowed to react to form B. Between 10.0 min and 30.0 min, the average rate of appearance of B is 1.3 × 10⁻⁴ M/s.

What is the rate of reaction?

The rate of reaction is the speed at which a chemical reaction takes place, defined as proportional to the increase in the concentration of a product per unit time and to the decrease in the concentration of a reactant per unit time.

Step 1: Write the balanced equation.

A(g) → B(g)

Step 2: Calculate the rate of reaction of A (rate of disappearance of A).

To calculate the rate of disappearance of A (rA) between 10.0 min and 30.0 min, we will use the following expression.

rA = -ΔnA / V. Δt = -(0.036 mol - 0.051 mol)/ (0.1000 L) (30.0 min - 10.0 min)

rA = 7.5 × 10⁻³ M/min

where,

ΔnA is the change in the number of moles of A.Δt is the change in time.

Step 3: Calculate the rate of reaction of B (rate of appearance of B).

The molar ratio of A to B is 1:1.

7.5 × 10⁻³ mol A/L.min × 1 mol B/1 mol A = 7.5 × 10⁻³ mol B/L.min

Step 4: Convert 7.5 × 10⁻³ M/min to M/s

We will use the conversion factor 1 min = 60 s.

7.5 × 10⁻³ M/min × 1 min/60 s = 1.3 × 10⁻⁴ M/s

A 100.0-mL flask is filled with 0.065 moles of A and allowed to react to form B. Between 10.0 min and 30.0 min, the average rate of appearance of B is 1.3 × 10⁻⁴ M/s.

The question is incomplete. The complete question is:

A 100.0 mL flask is filled with 0.065 moles of A and allowed to react to form B according to the reaction below. The following experimental data are obtained for the amount of A as the reaction proceeds. What is the average rate of appearance of B in units of M/s between t = 10 min. and t = 30 min.? Assume that the volume of the flask is constant. A(g) → B(g)

Time (min)     0.0          10.0          20.0           30.0          40.0

Moles of A   0.065     0.051         0.042          0.036       0.031

Learn more about rates of reaction here: https://brainly.com/question/24795637

Other Questions
DUE IN 5 MINUTES!!!1!!11!1!!1123 + 392 - 234 x 2 3 + 223 x 14 = Read the excerpt from The Boy Who Harnessed the Wind by William Kamkwamba.A sudden gust muffled the voices below, then picked up into a steady wind. It took hold of my T-shirt and whistled through the tower rungs. Reaching over, I removed a bent piece of wire that locked the machine's spinning wheel in place. Once released, the wheel and arms began to turn. They spun slowly at first, then faster and faster, until the force of their motion rocked the tower. My knees buckled, but I held on.Which character trait do the details in the excerpt reveal about Kamkwamba?curiosityempathyloyaltydetermination I need help please help me with this question because I dont know it { x + y = 158x- y = 112 The summer night air was feverish.The whisper of the breeze curled within my ear.The crowd's roar was thunder.How does the author use metaphors in the sentences?1. to describe sensory details2. to describe air movement3. as examples of alliteration4 to add rhythm to the sentences I need a answer soon plz How does the author develop Martha's view of Mary's experience living in India?Burnett describes Martha's unwavering scorn for Mary's pampered childhood.Burnett describes Martha's horror at how Mary was never taught to dress or take care of herself in India.Burnett describes Martha's desire to go to India and experience a semblance of Mary's former life.Burnett describes Martha's curiosity about the types of people and animals Mary encountered in India. Simplify57leaving your answer in index form. Joey likes beer and whisky and spends 75 in total on drink. His utility function for whisky (w) and beer (b) is = 5 + .He can buy beer at 2 a can but the liquor store tries to discourage overconsumption of spirits by charging higher prices for larger quantities: the cost in dollars of bottles of whisky works out at !.a. How many cans of beer and how many bottles of whisky does Joey consume?b. Illustrate your answer with a clearly labelled diagram showing Joey's budget constraint and his indifference curve passing through the optimal consumption bundle.c. Joey's friend Ross shops at the same liquor store and spends the same amount on drink. Jim, however, insists on drinking beer and whisky together. His utility function is = min{5, } How much beer and whisky does Jim buy? The name for a variety of methods used to examine how an amount will change if factors involved in predicting that amount change is: Cost analysis. Cost-volume-profit analysis. Sensitivity analysis. Contribution margin analysis. Factor analysis. what a nucleotide is compare industrialization in japan and western europe What interest is needed to earn $137.50 on a deposit of $500 for five years if it earns simple interest? Adriel answered 54 questions correctly on his multiple choice history final and earned a grade of 45%. How many total questions were on the final exam? I'll give brainliest, please help.Study the map. How did the location of the Italian Peninsula influence the Renaissance? Choose three correct answers.by providing access to sea trade with many culturesby exposing people to new ideas through tradeby enabling overland trade with North Africaby isolating the peninsula from other areas, allowing it to avoid the plagueby leading to increased wealth from trade, which supported learning At the movies, a couple bought 2 medium drinks and a large popcorn for $13.85. At the same theater, a family bought 3 medium drinks and 2 large popcorns for a total of $23.90. What is the cost of a large popcorn? Which of the following is not necessary for the creation of fossil fuels?A. Organic matterB HeatC PressureD. Wind The population of a small town was 3500 in 2005. The population increases by 4% annually. A. Write an exponential growth function to represent this situation. B. What will the population be in 2025? Lois tells Stew he can buy her pool house for $100,000. Stew is so excited to own a home of his own that he leaves a $10,000 check in her mailbox as a starting payment on the pool house. Then, he begins remodeling the pool house, spending $3,000 in repairs and improvements. Lois decides she made a big mistake and attempts to cancel this agreement. The most likely outcome will be: You have just finished reading a book that found out that a few other students read about it. You now decide to write a review of the your friend gave you for your birthday. You the same book and you talked to them book for your school magazine. Here are some comments from other students: The ending was unexpected. The story was poorly written. I found it inspiring There were too many characters. Write a review for your school magazine. The comments above may give you some ideas, and your own. Things to Consider: 1. The title and genre of the book 2. Why you read the book and what you expected 3. What the main message of the book is 4. If you like the book, convince people to read it. If you didn't, this should be clear in your introduction, conclusion and elsewhere. 5. BRIEF description of plot (setting, themes, characters) as appropriate. 6. Analyse the book - what are its good and bad points? Are the characters convincing and believable? Is the story fast-paced and engaging or slow and methodical - do you like this style? Are there any special moments you remember? Are or your intended audience's lives? 7. Do not forget to provide an overall recommendation (whether to read the book or not) there any connections to your lives you can also use some ideas of