A zero-order reaction has a constant rate of 3.10×10−4 M/s. If after 40.0 seconds the concentration has dropped to 6.50×10−2 M, what was the initial concentration?

State two physical properties of ionic compound

If 90.0 grams of ethane reacted with excess chlorine,how many grams of dicarbon hexachloride would form

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