Mg + 2HCI → MgCl2 + H2 How many grams of hydrochloric acid (HCI) is needed to produce 200g of H2?

What’s the scientific notation for the number 6,840,000,000

What is the equation fort the alkaline zinc/manganese dioxide cell. a) anode b)cathode c)overall equations.

1) a. water molecule breaks up into hydrogen and oxygen on passing electricity. does this involve breaking intermolecular or intramolecular forces of attraction. explain b. on boiling water changes to water vapor. does this involve breaking intermolecular or intramolecular forces of attraction. explain methanol evaporates faster than water. contrast the intermolecular forces and the vapor pressures of methanol and water?