An ideal gas at 7.5° C and a pressure of 1.94 105 Pa occupies a volume of 3.50 m3.?

👨🏻‍🏫 學術台物理學

[匿名]

2016-02-29 6:23 pm

更新1:

how many moles are present

更新2:

If the volume is raised to 5.60 m3 and the temperature raised to 36.5° C, what will be the pressure of the gas?

回答 (1)

賣女孩的火柴

2016-02-29 6:34 pm

✔ 最佳答案

Absolute temperature, T = (273 + 7.5) K = 280.5 K
Pressure, P = 1.94 × 10⁵ Pa
Volume, V = 3.50 m³
Gas constant, R = 8.314 J/(mol K)

PV = nRT
No. of moles, n = PV/RT = (1.94 × 10⁵) × 3.50 / (8.314 × 280.5) = 291 mol

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