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ANTONII [103]
3 years ago
10

Give three examples of elements that are gases at room temperature

Chemistry
1 answer:
frez [133]3 years ago
3 0

Hydrogen, oxygen and nitrogen.

Also, chlorine and fluorine.

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Answer: The volume of oxygen at STP is needed for complete given combustion is 1121.28 L.

Explanation:

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2C_{2}H_{18}(l) + 25O_{2}(g) \rightarrow 16CO_{2}(g) + 18H_{2}O(g)

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At STP, the pressure is 1 atm and temperature is 273.15 K. Therefore, using ideal gas equation the volume of oxygen is calculated.

PV = nRT

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V = volume

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T = temperature

Substitute the values into above formula as follows.

PV = nRT\\1 atm \times V = 50 mol \times 0.0821 L atm/mol K \times 273.15 K\\V = 1121.28 L

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