chemistry- gaz and stoechiometry

We have to prepare 500 gr of a HCl solution 15% by mass:
H2SO4 + NaCl at a Temperature of 100°C
NAHSO4 is also produced

The equation is:

H2SO4 + NaCl->NaHSO4 + HCl

1) How many grams of H2SO4 93% by mass and of NaCl do we need if we consider a loss of 3,O% of HCl during the preparation?

2) Find the total volume of HCl (gaz) produced during this preparation if the temperature is 15°C and the pression is 750mm Hg?

Thank you very much for the help

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asked by Ele

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