A football star kicks a ball which weighs 0.43 kg at a velocity of 22.5 m/s. Calculate the kinetic energy of the ball.

Calcium hydride (cah2) reacts with water to form hydrogen gas: cah2(s) + 2h2o(l) → ca(oh)2(aq) + 2h2(g) how many grams of cah2 are needed to generate 45.0 l of h2 gas at a pressure of 0.995 atm and a temperature of 32 °c?

How do you lengthen a pattern piece? (family and consumer science, sewing)

What is bromine+calcium iodide--> calcium bromide +iodine balanced