if you collect 1.75 L of hydrogen gas during a lab experiment, when the room temperature is 23ºC and the barometric pressure is 105 kPa, how many moles of hydrogen will you have?
using gas law,
P∗V=n∗R∗TP*V =n *R*TP∗V=n∗R∗T
Using given data,
n =P∗VR∗T=\frac{P*V}{R*T}=R∗TP∗V
therefore, n = 0.074 moles
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