Imix 30 grams of a solid, 30 grams of another solid, and 5 milliliter of water together in a sealed container. a chemical reaction takes place. what do you expect the mass to be after the reaction? why?

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 many moles of no2 will form when 3.3 moles of cu are reacted with excess hno3?

How many atoms or molecules are there in a mole of a substance?