How many meters did a car travel if it went 65mi/hr for 4.5 hours?

In an energy pyramid, which level has the most available energy?

Which element would mostly likely have an electron affinity measuring closest to zero

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