Can someone (just give me the answers

Write a net ionic equation to show that hydrofluoric acid, behaves as an acid in water.

Chemical kinetics what was the rate of reaction in trial 3? choose the closest answer.

What is the percent composition of ca(oh)2? 37.7% ca, 53.0% o, and 10.3% h 45.5% ca, 38.2% o, and 16.3% h 54.0% ca, 43.0% o, and 2.7% h 64.7% ca, 27.0% o, and 8.3% h