Part 1. Please help!! I only have until 5:00 PM, the amount of homework I have to do all at once is driving me insane if anyone can lend me a hand I'd appreciate it, thanks :) (part 1)

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 much energy is made when a pice of wood burns. how do you know

What is the molarity of 60.0 grams of naoh dissolved in 750 milliliters of water? a) 1.1 m b) 2.0 m c) 12 m d) 75 m