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Debora [2.8K]
3 years ago
14

An empirical formula shows the actual number of atoms of each element in a compound.

Chemistry
1 answer:
My name is Ann [436]3 years ago
7 0

Answer:

true

Explanation:

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WILL GIVE POINTS AND BRAINLIEST<br> Question:<br> Number of H− ions in 5.22 g of SrH2
Sophie [7]

Answer:

moles H = 2 x 0.0649=0.130

ions = 0.130 x 6.02 x 10^23=7.81 x 10^22

Explanation:

4 0
3 years ago
A gas occupies 5.31 liters at a pressure of 0.55 atm. Determine the volume at standard pressure.
yuradex [85]

Answer:

Option A; V =  2.92 L

Explanation:

If we assume a lot of things, like:

The gas is an ideal gas.

The temperature is constant.

The gas does not interchange mass with the environment.

Then we have the relation:

P*V = n*R*T = constant.

Where:

P = pressure

V = volume

n = number of moles

R = constant of the ideal gas

T = temperature.

We know that when P = 0.55 atm, the volume is 5.31 L

Then:

(0.55 atm)*(5.31 L) = constant

Now, when the gas is at standard pressure ( P = 1 atm)

We still have the relation:

P*V = constant = (0.55 atm)*(5.31 L)

(1 atm)*V = (0.55 atm)*(5.31 L)

Now we only need to solve this for V.

V = (0.55 atm/ 1 atm)*(5.31 L) = 2.92 L

V = 2.92 L

Then the correct option is A.

7 0
3 years ago
Which of the following are true of phases?Check all that apply.A.The particles in a liquid are in a fixed location.B.Gases have
saw5 [17]

Answer:

The answers are options b , c and d.

Hope this helps.

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3 years ago
Name the process which takes place when
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Explanation:

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