Sodium Azide help?

Question

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Answer 1

For the first part, just divide the grams by the molecular mass.

For the second part, you need to remember that one mole of gas occupies 22.4 literes at STP.

You are given the volume, so solve for the moles. Once you have that, you can use the molecular mass of N2 to solve for the grams.

Don't forget to put the temp. into Kelvin.