Determine the mass of hydrogen required to obtain 10 mol of hydrogen chloride.

H2 + Cl2-> 2HC1
According to the equation, we see that hydrogen for the reaction requires 2 times less mol than that of hydrogen chloride is formed. to form 10 moles of hydrogen chloride, 5 moles of hydrogen are required.
m (H2) = n (H2) * M (H2) = 5 mol * 2 g / mol = 10 g

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.