Which of the following elements does NOT need to be diatomic to exist in nature? A. Hydrogen
B. Oxygen
C. Carbon
D. Nitrogen

In the following redox reaction which is the oxidizing agent and which is the reducing agent? alcl3 + na nacl + al

Aroom with dimensions 7.00m×8.00m×2.50m is to be filled with pure oxygen at 22.0∘c and 1.00 atm. the molar mass of oxygen is 32.0 g/mol. how many moles noxygen of oxygen are required to fill the room? what is the mass moxygen of this oxygen?

How many moles of potassium hydroxide are needed to completely react with 2.94 moles of aluminum sulfate