what volume will 2.0 moles of nitrogen occupy at 720 torr and 20 degrees C?

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[匿名]

2017-05-10 8:01 am

更新1:

~ What pressure will be exerted by 25g of CO2 at a temperature of 25degrees C and a volume of 500 ml?

更新2:

~ At what temperature will 5.00g of Cl2 exert a pressure of 900 torr at a volume of 750 ml?

更新3:

~ What is the density of NH3 at 800 torr and 25 degrees C?

回答 (2)

Roger the Mole

2017-05-10 8:07 am

✔ 最佳答案

V = nRT / P = (2.0 mol) x (62.36367 L torr/K mol) x (20 + 273) K / (720 torr) = 51 L

P = nRT / V = (25 g CO2 / (44.00964 g CO2/mol)) x (62.36367 L torr/K mol) x (25 + 273) K / (0.500 L) = 21110 torr

T = PV / nR = (900 torr) x (0.750 L) / ((5.00 g Cl2 / (70.9064 g Cl2/mol)) x (62.36367 L torr/K mol)) = 153.5 K

n / V = P / RT = (800 torr) / ((62.36367 L torr/K mol) x (25 + 273) K) = 0.04304692 mol/L
(0.04304692 mol/L) x (17.03056 g NH3/mol) = 0.733 g/L NH3

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[匿名]

2017-05-10 8:12 am

Pv = nrt

V = nrt/p

V = 2*8.31*293.15/96000

Solve for v.

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