#7) As an extension of the of the combined gas law, the ideal gas law allows for different numbers of moles of gas. If

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#7)
As an extension of the of the combined gas law, the
ideal gas law allows for different numbers of moles of gas.
If we have 15.0 L of NH3 gas at STP, how
many GRAMS of this gas do we have?
Note: it is understood that the unit of your answer is
some number of grams, however do not explicitly include units in
your answer. Enter only a number. If you do enter a
unit ("g" in this case), you answer will be counted
wrong.
#8)
How much of a 0.2M solution of NaCl would you dispense
to measure out 3.0 grams of NaCl? Please give your
answer in units of LITERS, however do not explicitly include any
units in your answer. If you include units in your answer,
your answer will be scored as being incorrect.