Mg + 2HCl -> MgCl2 + H2 What is the mass, in grams, of hydrogen chloride needed to react with 3.49 moles of magnesium?

Electric charge is what ? a. kinetic energy b. radiation c. discovery d. electricity

The following reaction shows sodium carbonate reacting with calcium hydroxide. na2co3 + ca(oh)2 → naoh + caco3 how many grams of naoh are produced from 20.0 grams of na2co3? (molar mass of na = 22.989 g/mol, c = 12.01 g/mol, o = 15.999 g/mol, ca = 40.078 g/mol, h = 1.008 g/mol) 12.2 grams 15.1 grams 24.4 grams 30.2 grams

How much carbon is stored in the atmosphere as co2