What causes metamorphic rocks to form from existing rocks? O magma and minerals
O heat and pressure
O exposure to Earth's mantle
exposure
to Earth's surface

Ammonia and oxygen react to form nitrogen monoxide and water, like this: 4nh3 (g) + 5o2 (g) → 4no (g) + 6h2o (g) also, a chemist finds that at a certain temperature the equilibrium mixture of ammonia, oxygen, nitrogen monoxide, and water has the following composition: compound pressure at equilibrium nh3 65.1atm o2 31.3atm no 62.7atm h2o 65.8atm compound pressure at equilibrium nh3 65.3 atm o2 7.79 atm no 12.1 atm h2o 65.8 atm calculate the value of the equilibrium constant kp for this reaction. round your answer to 2 significant

The empirical formula of a compound is ch2o and its mass is 120 amu/molecule, what is its formula?

Which of the following is in the lanthanide family? a) uranium b) promethium c) silver d) gold