A 100 gram sample of LiCl times H2O is sufficiently heated several times in the oven until a constant mass of 75.25 grams is obtained. a.) what is the total mass LiCl remaining in the crucible b.) explain why there is a need to attain a constant mass of the sample after heating

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

Place the elements below in order of decreasing ionization energy. aluminum(al) chlorine(cl) magnesium (mg) sulfur(s)

How many grams of phosphorus are contained in 5.09 moles of phosphorus?