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mixer [17]
3 years ago
12

22.4L of hydrogen gas at STP contains how many molecules

Chemistry
1 answer:
Varvara68 [4.7K]3 years ago
4 0

Answer:

1 mole

Explanation:

At Standard Temperature and Pressure (273.15 Kelvin and 1 atmosphere), 22.4 L of gas is always equal to 1 mole.

We can use the Ideal Gas Equation to explain this: PV=nRT

At STP, like noted above, the Pressure is 1 atmosphere (or 101,325 Pa) and 273.15 Kelvin. Using this information, we can determine that the Ideal Gas Constant, R, is 0.08206. We can now solve this equation.

(1 atm)(22.4 L)=n(0.08206)(273.15)\\\\22.4 = n(22.4)\\\\\frac{22.4}{22.4} = \frac{n(22.4)}{22.4}\\ \\ n = 1

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