How many moles of oxygen will occupy 728 al 760 mm Hg and 25C? please keep 3 significant figures ?
回答 (2)
2020-04-29 11:37 am
Suppose it is "728 ml" instead of "728 al".
Pressure, P = 760/760 atm = 1 atm
Volume, V = 728 ml = 0.728 L
No. of moles, n = ? mol
Gas constant, R = 0.08206 L atm / (mol K)
Temperature, T = (273 + 25) K = 298 K
Gas law: PV = nRT
Then, n = PV/(RT)
No. of moles, n = 1 × 0.728 / (0.08206 × 298) mol = 0.0300 mol
Pressure, P = 760/760 atm = 1 atm
Volume, V = 728 ml = 0.728 L
No. of moles, n = ? mol
Gas constant, R = 0.08206 L atm / (mol K)
Temperature, T = (273 + 25) K = 298 K
Gas law: PV = nRT
Then, n = PV/(RT)
No. of moles, n = 1 × 0.728 / (0.08206 × 298) mol = 0.0300 mol
2020-04-29 11:25 am
It depends on what units belong to "728".
收錄日期: 2021-05-01 01:02:03
原文連結 [永久失效]:
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