Magnesium reacts with hydrochloric acid, hcl, to produce hydrogen gas (hint: a diatomic molecule)and magnesium chloride. write a balanced equation for this reaction.

What is the number of moles of chemical units represented by 9.03x10^24? and how do i show work? (dumb it down )

Find the mass, in grams, of 5.00*10^23 molecules of f2

There are two steps in the usual industrial preparation of acrylic acid, the immediate precursor of several useful plastics. in the first step, calcium carbide and water react to form acetylene and calcium hydroxide: cac2 (s) + 2h2o (g) → c2h2 (g) + caoh2 (s) =δh−414.kj in the second step, acetylene, carbon dioxide and water react to form acrylic acid: 6c2h2 (g) + 3co2 (g) + 4h2o (g) → 5ch2chco2h (g) =δh132.kj calculate the net change in enthalpy for the formation of one mole of acrylic acid from calcium carbide, water and carbon dioxide from these reactions. round your answer to the nearest kj .