Overview
I'm working on a chemistry exercise and need an explanation and answer to help me learn.
questions
1) What mass of sodium chloride is produced when 4 g of sodium hydroxide is reacted with hydrochloric acid:
NaOH + HCl ? NaCl + H2O
2) What mass of magnesium must be burned in oxygen to produce 8 g of magnesium oxide?
2Mg + O2 ? 2MgO
3) How many moles of calcium carbonate will be produced if a solution of 3.28 g of calcium nitrate in 100 mL of water is reacted with an excess of carbon dioxide, which reacts with water to form carbonic acid H2CO3?
CO2 + H2O ? H2CO3 Ca(NO3)2 + H2CO3 ? CaCO3 + 2HNO3