I need help with stoichiometry! if you could help please respond to this question and i will post the question. reason being, no one has answered the questions i have posted, and I need help quickly!

Answers

Answer 1

Answer:

will go do that.

Explanation:


Related Questions

How many moles in 13 grams of C 2 H6 ? show work

Answers

Answer:

0.43mole

Explanation:

Given parameters:

Mass of C₂H₆   = 13g

Unknown:

Number of moles  = ?

Solution:

To solve this problem we need to first find the molar mass of the given compound.

 Molar mass of C₂H₆ = 2(12) + 6(1)  = 30g/mol

So;

 Number of moles  = [tex]\frac{mass}{molar mass}[/tex]  

Number of moles  = [tex]\frac{13}{30}[/tex]    = 0.43mole

A. Neutrons and electrons
B. Protons and electrons
C. Electrons in energy levels
D. Protons and neutrons

Answers

Answer:

D.

Explanation:

Because protons and neutrons make up the mass of an atom.

Please help me!!! 12 points :)

Answers

I hope you get the answer your looking for :)

Calculate the pH of the following?
a) 0.12 M NaNO2
b) 0.10 M CH3NH3Cl
c) .45 M NaOCl?

Answers

the correct answer is c

HELP PLEASE!!!!!!
“Andy was drawing
of his circuit. When
asked to explain it,
he said, “This is an
example of a
perpendicular
circuit. The light on
the left will be
brighter because
there is less wire."
Is he correct?”

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I don’t think he is

plss help . i have no idea

Answers

Answer:

Protons and Neutrons have approximately the same mass.

Equal numbers of protons and electrons make an atom neutral.

Protons have a positive charge

Explanation:

Protons and Neutrons have approximately the same mass. - both are 1 amu

Equal numbers of protons and electrons make an atom neutral. - protons are +1 and electrons are -1, so they cancel each other if there are equal amounts.

Protons have a positive charge - this is true.

A very loud sound has a high _____.

resting point


amplitude



wavelength


bass

Answers

Answer:

Resting Point

Explanation:

Answer: amplitude

Explanation:

Please pls help ASAP

Answers

Answer:

??

Explanation:

I can't tell, you don't have the answer choices up I can't see them

what are the in the drop-down boxes?

explain why you need both muscles and bones to move your body.​

Answers

Answer:

i dont need

Explanation:

do u know ......

Seawater is an example of a _______ solution
a Liquid in gas
b Gas in liquid
C Solid in liquid
d Liquid in liquid

Answers

Answer:

C. Solid in liquid

Explanation:

Seawater is an example of a solid in liquid solution.

Sea water is made up of:

water mineral salts dissolved gases

A liquid solution is always made up of a solute being dispersed within the solvent medium.

The solvent is the liquid or fluid medium.

Such solutions are homogeneous because the solute particles are distributed evenly or uniformly in the solvent.

The solute is usually present in smaller amount compared to the solvent.

what is a good way to define lunar​

Answers

qualities/features of the moon

A sample of oxygen gas has a volume of 150 mL when its pressure is 0.587 atm at 155 K. If the pressure and temperature are increased to STP, what will the new gas volume be?​

Answers

Answer:

V₂ = 155.17 mL

Explanation:

Given data:

Initial volume = 150 mL

Initial pressure = 0.587 atm

Initial temperature = 155 K

Final temperature = 273.15 K

Final volume = ?

Final pressure = 1 atm

Formula:  

P₁V₁/T₁ = P₂V₂/T₂  

P₁ = Initial pressure

V₁ = Initial volume

T₁ = Initial temperature

P₂ = Final pressure

V₂ = Final volume

T₂ = Final temperature

Solution:

V₂ = P₁V₁ T₂/ T₁ P₂  

V₂ = 0.587 atm × 150 mL × 273.15 K / 155 K × 1 atm

V₂ = 24050.86 atm .mL. K / 155 K.atm

V₂ = 155.17 mL

PLS HELP!!!!! WILL GIVE BRAINLIEST, 5 STARS, AND THANKS!!!!!!!!!!


Which reactions are the reverse of one another?

condensation and addition

addition and elimination

elimination and condensation

substitution and addition

Answers

Answer:

it has to be b

Explanation:

the other ones don't make any sense

Please help, How would you define what a chemical reaction and an equation is? Give an example.How would you know if a chemical reaction is balanced? Give an example.

Answers

Answer:

A balanced chemical equation occurs when the number of the atoms involved in the reactants side is equal to the number of atoms in the products side.

Explanation:

In this chemical reaction, nitrogen (N2) reacts with hydrogen (H) to produce ammonia (NH3). The reactants are nitrogen and hydrogen, and the product is ammonia.

GIVING BRAINLIST TO BEST ANSWER! How does Bohr’s model of the atom compare with Thomson’s model?

A) They both describe atoms as small, indivisible spheres.
B) They both describe electrons as moving around the nucleus.
D) They both describe electrons as being surrounded by the positive matter.
C) They both describe atoms as being made up of positive and negative matter.

Answers

Answer:I say C .. u should give the other person Brainliest bc they had a fully answer!

Explanation:

Answer:

d on brainly

Explanation:

i just took the exam

Which of the following reactions is irreversible?

A. Zinc (Zn) reacting with hydrochloric acid (HCl)
B. Haber Process
C. Dehydrating copper sulfate (CuSO4)
D. Thermal decomposition of NH4Cl

PLEASE HELP

Answers

Answer:

A. Zinc (Zn) reacting with hydrochloric acid (HCl)

Explanation:

The reaction of Zinc with hydrochloric acid is an irreversible chemical process.

What makes a reaction reversible;

it must be involved in reversible chemical processes, no matter how small the extent of the reversibility. the rate of forward reaction must be equal to the backward one.

So, hydrochloric acid when reacting with Zinc will give a complete chemical change that will go into completion.

Answer:

(A): Zinc (Zn) reacting with hydrochloric acid (HCI)

Explanation:

I got it right on founders edtell

What is the molar mass of KNO3?

Answers

Answer:

K=39, N=14, O=16. So molar mass of KNO3= 39+14+3(16)= 101

Im Wrong?

What is the molality of a solution made by dissolving 2 moles of NaOH in 6 kg
of water?
A. 0.33 mol/kg
B. 12 mol/kg
C. 3 mol/kg
D. 2 mol/kg

Answers

The molality of a solution : m = 0.33 mol/kg

Further explanation

Given

2 moles of NaOH in 6 kg  of water

Required

The molality

Solution

Molality shows how many moles are dissolved in every 1000 grams of solvent.

m = n x (1000/p)

m = Molality

n = number of moles of solute

p = solvent mass (grams)

Input the value :

solute : NaOH

solvent : water

m = 2 moles : 6 kg

m = 0.33 mol/kg

What does the speed of a sound depend on?
A.
the medium through which it travels
B.
the source from which it is emit
C.
the volume of the sound
D.
the pitch of the sound

Answers

I believe it is A. the medium through which it travels

how molecules react to an increase in temperature.

Answers

Answer:

An increase in temperature typically increases the rate of reaction. An increase in temperature will raise the average kinetic energy of the reactant molecules. Therefore, a greater proportion of molecules will have the minimum energy necessary for an effective collision (Figure. 17.5 “Temperature and Reaction Rate”).

Explanation:

Which of the following empirical formulas is written correctly? *

Answers

I think AIP is the correct one

What is the empirical formula for C10h22

Answers


The empirical formula is
C5H11


Explanation:
We have decane, the alkane with a chemical formula of
C10H22
.
The empirical formula of a substance has the smallest ratio between the elements its composed of.
Here, we got the carbon to hydrogen ratio as
10:22
. So, we need to find the greatest common factor between the two numbers.

10=2*5

22=2*11

As you can see here, the greatest common factor between the two numbers is
2
, and so we divide both numbers by
2
.
10/2=5

22/2=11


And so, the new formula becomes

C5H11

*
How do you identify forces in a diagram
sun
arrow
moon
O
Mars

Answers

We can show the forces acting on an object using a force diagram. In a force diagram, an arrow represents each force. The arrow should be labelled with the name of the force and its size in newtons.

What are the three eras in the geologic time scale? *

Answers

the Paleozoic
the Mesozoic
the Cenozoic

I don’t know this and I need help help me

Answers

If I’m not wrong, enjoying hobbies is emotional, spending time with friends is social and eating a nutritious diet is physical.

Which statement best describes the relationship between photosynthesis and cellular respiration?
Photosynthesis removes carbon from the atmosphere, and cellular respiration releases carbon back into the atmosphere.
Photosynthesis is part of the carbon cycle, and cellular respiration is not.
Only plants perform photosynthesis, and only animals perform cellular respiration.
Photosynthesis releases carbon into the atmosphere, and cellular respiration removes carbon from the atmosphere.

Answers

Answer:

Photosynthesis removes carbon from the atmosphere, and cellular respiration releases carbon back into the atmosphere.

Explanation:

The first option clearly expresses the relationship between photosynthesis and cellular respiration.

Cellular respiration releases carbon back into the atmosphere whereas photosynthesis removes the carbon from the atmosphere.

Photosynthesis is the process whereby green plants manufacture their food using carbon dioxide and water.

In cellular respiration, the product of the photosynthesis is used by organisms to produce energy.

which of the following is true of climate but not of weather

A. Independent of regional temperatures.

B. Not useful for making future predictions

C. Determined by precipitation patterns collected over many years

D. Calculated from a variety of data, including wind speed and direction and cloud cover

Answers

Answer:

C. Determined by precipitation patterns collected over many years

guys please finnish thiissss​

Answers

Answer:

1. H2O

2. Ba(OH)2

3. H2O

4. H2O

5. Ca(OH)2

6. H2O

Explanation:

Answer:

1. H2O

2. Ba(OH)2

3. H2O

4. H2O

5. Ca(OH)2

6. H2O

Explanation:

Hope this helps

DENSITY CHEMISTRY WORD PROB I WILL MARK BRAINLIEST PLEASE HELP I NEED ASAP

Answers

Answer:

The number of passengers that the Embraer E170 could carry if its fuselage was made of steel  is 39 passengers

Explanation:

The given parameters of the cylinder representing the fuselage are;

The length of the cylinder, l = 30.0 meters

The width of the cylinder, w = 2.5 meters

The thickness of the cylinder, t = 2.5 mm = 0.0025 meters

The volume of the metal required to make the fuselage cylinder, V = (π·w²/4 - π·(w - 2·t)²/4) × l

Therefore, by substituting the known values, we have;

V = (π × 2.5²/4 - π×(2.5 - 2×0.0025)²/4) × 30 = 0.58845957392

The volume of the metal required to make the fuselage cylinder, V≈ 0.58846m³

The given density of steel = 7.87 g/cm³ = 7870 kg/m³

The given density of aluminum = 2.70 g/cm³ = 2,700 kg/m³

Mass = Density × Volume

The mass of the fuselage made with steel = The given density of steel × The volume of the metal required to make the fuselage cylinder

∴ The mass of the fuselage made with steel = 7870 × 0.58846 ≈ 4631.18

The mass of the fuselage made with steel ≈ 4631.18 kg

Similarly, the mass of the fuselage made with aluminum = 2,700 × 0.58846 ≈ 1588.84

The mass of the fuselage made with aluminum ≈ 1588.84 kg

The total mass the Embraer E170 could carry = The mass of the fuselage made with aluminum + The mass of the 78 passengers

The average mass of each passenger = 79 kg

∴ The total mass the Embraer E170 could carry ≈ 1588.84 + 78 × 79 = 7750.84

The total mass the Embraer E170 could carry ≈ 7750.84 kg

The extra mass the Embraer E170 could carry when made of steel = (The total mass the Embraer E170 can carry) - (The mass of the fuselage made with steel)

∴ The extra mass the Embraer E170 could carry when made of steel = 7750.84 - 4631.18 = 3119.36

The extra mass the Embraer E170 could carry when made of steel ≈ 3119.36 kg

The number of passengers the Embraer E170 could carry when made of steel  = (The extra mass the Embraer E170 could carry when made of steel)/(The average mass of one passenger)

∴ The number of passengers the Embraer E170 could carry if its fuselage was made of steel  = 3119.36 kg/(79 kg/passenger) ≈ 39.489 passengers

The number of passengers that the Embraer E170 could carry if its fuselage was made of steel  ≈ 39 passengers (we round down when counting people which are whole quantities)

Energy stored in an object because of position or condition is called ___________ energy.

Answers

Answer:

Potential energy

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