N2(g) + 3 H2(g) → 2 NH3(g) How many moles of ammonia gas are produced when 84.0 grams of nitrogen is reacted?

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

Which elements are found in glucose, the product of photosynthesis? a. carbon, hydrogen, and oxygen b. carbon and hydrogen c. carbon, nitrogen, and oxygen d. hydrogen, nitrogen, and carbon

What is the amount of energy for a photon that has a 125 cm wavelength