15) When calcium chloride and potassium phosphate are dissolved they react to form aqueous potassium chloride and calcium phosphate powder.

Which of the following observations indicates that there is a small, dense, positively charged part in the center of an atom? some uncharged particles are scattered by a gold foil. all uncharged particles are attracted towards a gold foil. all positively charged particles pass straight through a gold foil. some positively charged particles bounce back from a gold foil.

Which of these expressions are correct variations of the combined gas law? p1v1t2 = p2v2t1 both

Precision can be defined as the o exact center of a data set. o reproducibility of a measured value. o correlation between two variables that are measured in a data set agreement between a measured value and an accepted value.