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Mg + 2HCl ---> MgCl2 + H2 If 825 mL of hydrogen gas were needed at...

Mg + 2HCl ---> MgCl2 + H2

If 825 mL of hydrogen gas were needed at 22 C and 755 mmHg, how many mL of 0.200 M of HCl would be required?

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