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Home Q & A Board Science-Related Homework Help Chemistry (Moderator: Laser_3)
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Hmandrade83 Hmandrade83
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8 years ago
Please help
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#1
Staff Member
6 years ago
STP conditions are usually given as a pressure of 1 atm and a temperature of 0∘C. Under these conditions, 1mole of any ideal gas occupies 22.4 L→ this is known as the molar volume of a gas at STP.

Using the molar volume of a gas at STP, you can calculate the number of moles of SO2 gas present in your sample



\(2.50\ L\ .\ \frac{1\ mole\ of\ \ SO_2}{22.4\ L}=\ 0.111607\ mole\ of\ SO_2\)

To convert this to grams, use the molar mass of SO2 gas


\(
0.111607\ mole\ of\ SO_2\ .\ \frac{64.066\ g\ }{1\ mole\ of\ SO_2}=\ 7.15\ g  \)
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