Describe the different abiotic and biotic parts of an ecosystem. identify and explain what organisms lie on each of the trophic levels.

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?

What’s the theoretical yield of solid lead

How many moles of no2 will form when 3.3 moles of cu are reacted with excess hno3?