How many liters of N2 are needed to react with 92 g of K, at STP, according to the following reaction? (Balance equation first.) ___ K + ___ N2 → ___ K3N

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?

Why dose heating increase the speed at which a solution dissolved in water

When a wire with a current is placed in a magnetic field, electrical energy is transformed into mechanical energy select the best answer from the choices provided t f