Which correctly list the three gases that each make up less than 1 percent of Earth's atmosphere? O argon, water vapor, carbon dioxide
O oxygen, argon, water vapor
O nitrogen, oxygen, carbon dioxide
O carbon dioxide, oxygen, argon

In which reaction is precipitation occurring?

Liquid ammonia is produced at high temperatures and under great pressure in a tank by passing a mixture of nitrogen gas and hydrogen gas over an iron catalyst. the reaction is represented by the following equation. n2(g) + 3h2(g) → 2nh3(g) changing all but one experimental condition will affect the amount of ammonia produced. that condition is a) increasing the concentration of both reactants b) changing the temperature within the tank c) decreasing the pressure within the tank. d) increasing only the amount of nitrogen present.

How many moles of potassium are needed to react completely with 12.8 moles of magnessium bromide?