We collect in a vessel, hydrogen emitted due to the passage of an electric current through an aqueous solution of acid. For 10 minutes 374 cm ^3 of hydrogen are collected at a temperature of 20 ° C and at atmospheric pressure.

A. What is the mass of the hydrogen collected, if it is known that the density of hydrogen at atmospheric pressure and at a temperature of 0 ° C is: 9.00 * 10 ^ -5 g cm ^ 3?

B. How many moles of hydrogen atoms were collected (assume that the atomic mass of hydrogen is 1.0)?
C. If the current intensity is 5A, what is the magnitude of the charge passed through the solution?
D. How much charge is needed for release in front of hydrogen atoms?