Answer:
rate = k[X][C]
Explanation:
When you are solving for rate law, you are only looking at the reactants of the slow reaction. In this case, step 2 is the slow one. Since there is only one X and one C on the reactants side, the coefficient in the rate law would each be one, which you don't need to include, as it is assumed.
The chemical reaction that is produced by modelage masks causes:
Answer:
an increase in temperature
Explanation:
The chemical reaction that is produced by modelage masks causes: an increase in temperature
Meaning of metamerism and give an example
Answer:
In colorimetry, metamerism is a perceived matching of colors with different (nonmatching) spectral power distributions. Colors that match this way are called metamers.
Explanation:
In colorimetry, metamerism is a perceived matching of colors with different (nonmatching) spectral power distributions. Colors that match this way are called metamers.
examples
diethyl ether and methyl propyl ethers are metamers.
How many moles would be present in 9.54x 1023 molecules of ammonia?
Avogadro's law states that in every mole of a substance, there are [tex]6.022 \times 10^{23}[/tex] particles.
This means that in [tex]9.54 \times 10^{23}[/tex] molecules, there are [tex]\frac{9.54 \times 10^{23}}{6.022 \times 10^{23}}=\boxed{1.58 \text{ moles (to 3 sf)}}[/tex]
What is the engine piston displacement in liters of an engine who’s displacement is listed as 430 in.²
For an engine whose displacement is listed as 430 in.², the engine piston displacement in liters is mathematically given as
PD= 7.37 L
What is the engine piston displacement in liters of an engine whose displacement is listed as 430 in.²?
Generally, the equation for the dimensional analysis method,\, we convert in to L is mathematically given as
l*(v/l)*l/v
Therefore, piston displacement
PD=(450 in3) . (1 dm3 / 61.024 in3) . (1 L / 1 dm3)
PD= 7.37 L
In conclusion, piston displacement
PD= 7.37 L
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6. How many liters of 4.0 M solution can
be made using 8.0 mol of lithium
bromide?
8.0 mol of lithium bromide
4 M solution of lithium bromide requires 4 moles of the compound per liter
8 ÷ 4 = 2
answer is 2 Liters
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100 POINTS! HELP ME IF YOU LOVE JESUS!
A solution contains 150 g of water and 55 g of sodium chloride is at 80℃. Will all of the salt be dissolved into the water? Mathematically explain your answer.
0.0030 x 8.65=
report answer to correct number of significant figures.
The result of 0.0030 x 8.65 to the correct number of significant figures is 0.02595. Details about multiplication can be found below.
What is multiplication?Multiplication is the process of computing the sum of a number with itself a specified number of times, or any other analogous binary operation that combines other mathematical objects.
Multiplication as an operation increases a number.
According to this question, the following expression is given: 0.0030 x 8.65 = 0.02595
Therefore, the result of 0.0030 x 8.65 to the correct number of significant figures is 0.02595.
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How many grams of Copper are in 500grams of Cu2CO3?
Answer:
≈170.22 [gr].
Explanation:
1) M(Cu₂CO₃)=2*64+12+3*16=188 [gr/mol];
2) the part of copper in Cu₂CO₃ is:
[tex]\frac{64}{188} =\frac{16}{47};[/tex]
3) 16/47% of 500 [gr] is:
[tex]500*\frac{16}{47}=170.22[gr].[/tex]
Which inner planet has 2 moons? Question 2 options: Mercury Venus Earth Mars
Answer:
Mars
Explanation:
neither Mercury nor Venus have any moons at all, Earth has one and Mars has its two small moons
How many moles of calcium do you have if you measure out 13.95 g of calcium?
Moles are the divisional of the mass and the molar mass. In 13.95 gms of calcium, there are 0.348 moles.
What are moles?In chemistry, moles are the measurement units that are used to estimate the small entities of the atoms or the molecules. Moles are calculated as:
Moles = mass ÷ molar mass
We know,
The molar mass of calcium = 40 gm/mol
The mass of calcium = 13.95 gms
Moles of calcium are calculated as:
Moles = 13.95 ÷ 40
= 0.348 moles
Therefore, in 13.95 gms 0.348 moles of calcium is present.
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Which indicator most likely suggests that a chemical change is taking place?
change in size
change of color
Ochange of state
O change in shape
Answer:
change of color
Explanation:
One or more of the following events can indicate that a chemical reaction has occurred: The reaction flask's interior has undergone a color shift. A change in color and the appearance of bubbles are two indications of a chemical shift. The correct option is B.
A large variety of various observable characteristics, such as color change, energy change (temperature change or light produced), gas production, precipitate formation, and property change, can be used to detect chemical reactions.
An indicator is a chemical substance that modifies color when an acid or base is present. Indicators are often mildly acidic or basic in nature and originate from plant pigments.
Thus the correct option is B.
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The substance that dissolves the solute
A) Solubility
B) Solvent
C) Solute
Answer:
Solvent
Explanation:
Solvent dissolves solute resulting in the formation of a solution.
Answer:
B) Solvent
Explanation:
In forming a solution, the substance which dissolves the solute is called the solvent.
The decisions people (society) make to reduce their consumption of resources will most likely have a positive impact on the environment.
Question 30 options:
True
False
Answer:
True
Explanation:
I think it is common sense to assume that if we all came together to reduce our consumption then less resources would be harvested from envrionment and thus we would have positive impact on environment.
what are all the ways that you think knowing about the flow of energy might be useful in
thinking about the chemistry of Climate Change.
Yes the main benifit can be recyclation of energy
The example can be seen in powerbanks or invertersThe chemical energy present inside the battery can be used to convert itself into electric energy.Which can help us in climate protection# 20 of Equilibrium
At 1500°C the system:
2NO(g)
N₂(g) + O₂(g) was allowed to come to equilibrium. The equilibrium concentrations were:
NO(g) = 0.0021 M; N₂ = O₂ = 0.239 M.
What is the value of Ke at this temperature?
Select one:
O a.
27.2
O b.
7.7 x 10-5
O c.
3.7 x 10-²
d.
1.3 x 104
O e. 8.8 x 10-3
Answer:
# 20 of Equilibrium
At 1500°C the system:
2NO(g)
N₂(g) + O₂(g) was allowed to come to equilibrium. The equilibrium concentrations were:
NO(g) = 0.0021 M; N₂ = O₂ = 0.239 M.
What is the value of Ke at this temperature?
Select one:
O a.
27.2
O b.
7.7 x 10-5
O c.
3.7 x 10-²
d.
1.3 x 104
O e. 8.8 x 10-3
Explanation:
# 20 of Equilibrium
At 1500°C the system:
2NO(g)
N₂(g) + O₂(g) was allowed to come to equilibrium. The equilibrium concentrations were:
NO(g) = 0.0021 M; N₂ = O₂ = 0.239 M.
What is the value of Ke at this temperature?
Select one:
O a.
27.2
O b.
7.7 x 10-5
O c.
3.7 x 10-²
d.
1.3 x 104
O e. 8.8 x 10-3
Which is NOT included
in the appendicular
skeleton?
B. leg bones
A. arm bones
D. pelvic bones
C. ribs
Answer:
C. ribs.
Explanation:
The appendicular skeleton includes the shoulder girdles and arm bones, the pelvic gridle and the lower limb bones (leg bones). The ribs is part of the axial skeleton.
# 16 of Approaching Equilibrium
For the reaction system A₂(g) + B₂(g) = 2AB(g)
the equilibrium constant K= 6.2
A system using this reaction was being tried in a 1.00 L reactor. It was charged with 0.20 mol A2, 0.15 mol B₂ and 0.60
mol AB.
The system was allowed to come to equilibrium. Which statement below describes the system coming to equilibrium?
(Note: in the answers, Q refers to the reaction quotient, K refers to the equilibrium constant).
Select one:
O a. The reaction goes to the right, more products will form because Q < K
O b. The reaction goes to the left, more reactants will form because Q > K
O c. The reaction goes to the right, more products will form because Q > K
O d.
It is not possible to predict in which direction the system will travel to arrive at equilibrium.
e.
The reaction goes to the left, more reactants will form because Q < K
From the calculation, Q >K, the reaction proceeds towards the left and more reactants will form.
What is equilibrium constant?The term equilibrium constant refers to the value that could indicate the extent of conversion of reactants to products.
Thus, given that the equilibrium constant for the reaction A₂(g) + B₂(g) = 2AB(g) is 6.2, the Qc is obtained from;
Qc = [0.60]^2/[0.20] [0.15]
Qc = 0.36/0.03
Qc = 12
Since Q >K, the reaction proceeds towards the left and more reactants will form.
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calculate the molarity of 500.0 mL of solution in which 50.0g of HCL has been dissolved
[tex]\huge\underline\mathcal{\red{A}\blue{n}\pink{s}\purple{w}\orange{e}\green{r} -}[/tex]
Given - 500 mL of solution containing 50g waterTo calculate - molarity of the solutionWe know that ,
[tex]Molarity \: (M) = \frac{no. \: of \: moles \: of \: solute }{volme \: of \: solution} \\[/tex]
it can be seen that we aren't provided with the no. of moles of solute in the question.
So let's calculate it using the given formula ~
[tex]no. \: of \: moles \: of \: solute = \frac{given \: mass}{molar \: mass} \\ \\ \longrightarrow \: \frac{50}{36.5} \\ \\ \longrightarrow \: 1.37 \: moles \: ( \: approx \: )[/tex]
Also ,
we're given that volume of solution = 500 mL = 0.5 L
Substituting the values in the formula of molarity , we get
[tex]Molarity = \frac{1.37}{0.5} \\ \\ \bold{\implies \: \boxed{Molarity = 2.74M}}[/tex]
hope helpful ~
Which one is one pkease?
[tex]\qquad\qquad\huge\underline{{\sf Answer}}[/tex]
The Correct choice is D. Fe + S = FeS
because, in nature Iron (Fe) and Sulphur (S) are found in mono - Atomic form. so, There will be 1 Fe atom reacting with 1 S atom to form FeS (Iron sulphide)
(b) Washing soda crystals react with acid to give off carbon dioxide.
If you added some washing soda crystals to vinegar,
what would you see happening?
50 POINTS PLEASE ANSWER QUICK (bad answers will be reported)
22. A student claims that water's polarity is the reason it has high specific heat. What method could the student use to test his claim?
A. Perform research to see if other polar molecules have high specific heat.
B. Measure how much energy it takes to increase the temperature of water by one degree.
C. Mix water with acid and test the new specific heat.
D. Determine how dissolving salt in water affects the specific heat.
Answer:
B
Explanation:
specific heat capacity is the amount of Heat required to raise the temperature of a unit mass of substances by one degree
Equilibrium Constant Calculation
For the reaction A(g) + B(g) 2 C(g) the following equilibrium concentrations were found:
[A(g)] = 0.232 mol/L
[B(g)] = 0.251 mol/L
[C(g)] = 0.750 mol/L
Calculate the value of the equilibrium constant Ke. Give 3 significant figures in your answer.
The value of the equilibrium constant, Ke given the data from the question is 9.660
What is equilibrium constant?Equilibrium constant for a given is defined as the concentration of the products raised to their coefficient to the concentration of the reactants raised to their coefficient
For example:
eB <=> cD
The equilibrium constant for the reaction above is given as
Ke = [D]^c / [B]^e
How to determine the equilibrium constantThe following data were obtained from the question:
A(g) + B(g) <=> 2C(g)[A(g)] = 0.232 mol/L[B(g)] = 0.251 mol/L[C(g)] = 0.750 mol/LEquilibrium constant (Ke) =?The equilibrium constant for the reaction reaction can be obtained as follow
Ke = [C]² / [A][B]
Ke = [0.75]² / [0.232][0.251]
Ke = 9.660
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What is the [OH-] of a solution which has a [H+] of 1×10−5 M1×10−5 M?
How many neon atoms are contained in (6.73x10^2) grams of neon?
Atoms are the indivisible particles of matter. Atoms, molecular mass, and moles can be related by the Avogadros number. There are 2.00 × 10²⁵ atoms of neon in the sample.
What is mass?The mass of the substance is the multiplication product of the moles and the molar mass.
We know, that 1 mole = 6.022 x 10²³ atoms
From the Avogadro's number, mass, and the molar mass the number of atoms is calculated as:
(6.022 x 10²³ atoms ÷ 1 mole Neon) × (1 mole Neon ÷ 20.18g) × ((6.73x10²)g Ne) = 2.00 × 10²⁵ atoms.
Therefore, 2.00 × 10²⁵ atoms of neon are present in the sample.
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Explain how friction is involved in energy transformation.
Answer:
Friction also prevents an object from starting to move, such as a shoe placed on a ramp. When friction acts between two surfaces that are moving over each other, some kinetic energy is transformed into heat energy.
Friction is involved in energy transformation considering the fact that When friction acts between two surfaces that are moving over each other, some kinetic energy is transformed into heat energy.
Friction also prevents an object from starting to move, such as a shoe placed on a ramp.
In other words, opposing force is known as friction. The type of friction that acts on an object that is not moving is static friction.
Static friction serves as a kind of friction that do occur between two object that are not moving which means the object are static in nature.
Thats why during rainy season while walking on slippery roads people wear shoes with spikes which prevents a person from slipping into mud by the action of friction.
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Indicate whether solutions of the following salts would be acidic, basic, or pH-neutral.
a. NaNO3
b. Ba(C2H3O2)2
C. CH3NH3Cl
4. C6H5NH3CHO2
e. CoBr3
Answer is NH4NO3
YOU HAVE WRITTEN WRONG IN OPTION NO. A
EXPLANATION
Select the correct structure that corresponds to the name
(See image)
2-methyl pentane
The correct structure that corresponds to the name in the image above is structure A. Details about hydrocarbons can be found below.
What is an alkane?Alkanes are organic compound that belongs to any acyclic saturated hydrocarbon e.g. methane, ethane, etc.
Alkanes have a single carbon bond and can be attached to by certain compounds. Methyl is a compound with the formula; CH3.
Therefore, the correct structure that corresponds to the name in the image above is structure A.
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Answer:
C
Explanation:
It was right on acellus
At what temperature will 13.2 grams of neon gas occupy 12.30 liters at 1.95 atmospheres? Answer
soil? Which organism in the tundra food chain would use this recycled matter?
of organisms and animal wastes.
A model of a shopping centre is drawn to scale where 1 cm on the model represent 4 m on the ground. Music shop Thabo's Sports Ware Fati's Clothing shop Grocery store PARKING Coffee shop Toilets Restaurant Shoe store Physiotherapy Health and Fitness center 1.1 Which shop is on the right of the physiotherapy? (2) 1.2 Describe the position of the Coffee Shop in relation to the Toilets. (2)
What do you think is the reason for an increasing atomic radius within one group?
Answer:
As you go down a group on the periodic table, you get more electron shells and therefore a larger atomic radius.