Describe how you would prepare exactly 80 ml of a 0.2 m solution of glycerol in water. the molecular weight of glycerol is 92.1 g/mol. the density of glycerol is 1.26 g/ml 4.what is the concentration of a 1: 10 dilution of a 2.5 m solution of nacl? how would you prepare exactly 100 ml of such a solution?

Consider the nuclear equation below. 239 > x + 4 he 94 2 what is x? 1.235 cm 96 2.243 u 92 3.235 u 92 4.243 cm 96

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

Are oil and water a mixture or solution