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Colt1911 [192]
3 years ago
14

An unknown substance kept in a sealed container at room temperature has a pressure of 2 atm. When the container was opened, the

substance was exposed to normal atmospheric pressure, 1 atm. Which change did the substance most likely undergo?
Neither the temperature nor the volume will change.

The volume will decrease.

The volume will increase.

The temperature will increase.​
Chemistry
1 answer:
ra1l [238]3 years ago
3 0

Answer:

I took the test it's C.The volume will increase.

Explanation:

Since the pressure went down from 2 atm to 1 atm, the volume will go up! They are inversely related.

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The following equation describes how sodium and chlorine react to produce sodium chloride: 2Na + Cl2 -> 2NaCl Is the equation
DedPeter [7]

Answer:

The equation shows balance.

Explanation:

You can easily count the number of elements on each side.

On the left side of the equation, you have 2 moles of Na and 2 moles of Cl.

On the right side of the equation, you also have 2 moles of Na and 2 moles of Cl because the two elements formed a compound meaning that whatever number is in front of them, both elements will receive the same number.

5 0
4 years ago
Enter your answer in the provided box. what is the emf of a cell consisting of a pb2 / pb half-cell and a pt / h / h2 half-cell
sp2606 [1]

Answer:

The emf of the electrochemical cell has been calculated to be <u>3.364.</u>

in order to calculate the emf we need to apply Nernst equation.

The emf has been the potential of the cell in the reaction with the change in the electrons in the reaction. The emf of the cell has been given by the Nernst equation as -

                            emf= E⁰ cell - 0.059/n. log 1/concentration

Computation for the emf of the cell

  The given cell has the number of electrons transfer, n= 2

  The concentration of   Pb2= 0.57 M

  The concentration of   H= 0.090 M

The cell potential of the reaction has been= -0.126

Substituting the values for the emf of the cell:

                  emf= -0.126- 0.059/2 * log 1/ [0.57]x [0.090] ²

                  emf= 1.555* 2.337

                  emf=3.634 v

The emf of the electrochemical cell has been calculated to be 3.634 v.

Learn more about emf here-

brainly.com/question/9425530

#SPJ4

4 0
2 years ago
If the pressure on gaseous reactant is increased, the rate of reaction is increased because there is an increase in the
mixer [17]

Answer:

collisions between molecules

8 0
3 years ago
How much energy would be released if 450.0 g of the substance completely reacted with oxygen?
SOVA2 [1]

Answer:

1.1853 kJ

Explanation:

4 0
4 years ago
The mass of 10 cm^3 of iron is 79 g. What is its density?
Assoli18 [71]
Answer: d = 7.9 g/cm^3

Identify the given information. 
m = 79 g
v = 10 cm^3

Choose which formula you should use. In this case, you are finding the density.
d = m/v

Substitute and solve.
d = 79 g/10 cm^3
d = 7.9 g/cm^3
5 0
4 years ago
Read 2 more answers
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