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masha68 [24]
3 years ago
12

WILL MARK BRAINLIEST IF YOUR ANSWER IS CORRECT

Chemistry
2 answers:
olga2289 [7]3 years ago
6 0

Answer:

1. <u>Element</u>

2. <u>Compound</u>

3. <u>Heterogeneous</u><u> </u><u>mixture</u>

4. <u>Homogeneous</u><u> </u><u>mixture</u>

5. <u>Homogeneous</u><u> </u><u>mixture</u>

6. <u>Heterogeneous</u><u> </u><u>and</u><u> </u><u>homogeneous</u><u> </u><u>mixture</u>

7. <u>Homogeneous</u><u> </u><u>mixture</u>

8. <u>Heterogeneous</u><u> </u><u>mixture</u>

Anettt [7]3 years ago
3 0
1. Gold is element
4. D
2 b
3c
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A 25 liter gas cylinder contains 10 mole of carbon dioxide. Calculate the pressure, in atm, of the gas at 325K.
Arada [10]

<u>Answer:</u> The pressure of carbon dioxide gas is 11 atm

<u>Explanation:</u>

To calculate the pressure of gas, we use the equation given by ideal gas equation:

PV = nRT

where,

P = pressure of the gas = ?

V = Volume of gas = 25 L

n = number of moles of gas = 10 mole

R = Gas constant = 0.0821\text{ L atm }mol^{-1}K^{-1}

T = temperature of the gas = 325 K

Putting values in above equation, we get:

P\times 25L=10mol\times 0.0821\text{ L atm }mol^{-1}K^{-1}\times 325K\\\\P=11atm

Hence, the pressure of carbon dioxide gas is 11 atm

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