We can use the ideal gas law to solve this problem:
PV = nRT
where:
P = pressure = 1.5 atm
V = volume = 8.56 L
n = number of moles
R = gas constant = 0.08206 L atm/mol K
T = temperature = 273 K (0 degree Celsius)
Rearranging the equation to solve for n:
n = PV/RT
Plugging in the values:
n = (1.5 atm * 8.56 L) / (0.08206 L atm/mol K * 273 K)
n = 0.573 moles
Therefore, there are 0.573 moles of H2 molecules present in this gas sample.
A sample of hydrogen gas (H2) has a volume 8.56L at a temperature of 0 degree and a pressure of 1.5atm. calculate the number of moles of H2 molecules present in this gas sample.
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