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How many moles of gas are in a 34.2 L container at 1 atm of pressure and 273.15 K?

User Mmatyas
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1 Answer

5 votes

Answer:

1.525834 (1.53 when accounting for significant figures).

Step-by-step explanation:

This problem relies on the Ideal Gas Law, PV = nRT, where P is pressure, V is volume, n is moles, R is a specific constant, and T is temperature. In this problem, we are solving for n, moles, so we would rewrite it as n = PV/RT. Since the units here are moles, liters, atmospheres, and kelvin, R would be the value in atmosphere liter per mole kelvin, or 0.0821. From here, you just enter the values in the fraction and calculate.

For the significant figures, I followed the measurement of 34.2 L, giving 3, although an argument could be made for 1 significant figure from 1 atm, I imagine your professor would want something more specific than 2.

User AntonTkachov
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