Dinitrogen Tetroxide (N2O4) is a powerful oxidizer used in the space industry as a rocket propellant. In order to produce 36.00 moles of N2O4, how many grams of O2 will be needed?

Answer is in the photo. I can only upload it to a file hosting service. link below!

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because natural gas is colorless, odorless, and tasteless, distributors add mercaptan (a chemical that smells like sulfur) to give natural gas a distinct unpleasant odor (it smells like rotten eggs). they locate the types of rock that are likely to contain natural gas deposits.

a gas, having a molecular weight of 13 kg/kmol and a kinematic viscosity of 0.25 cm2/s, flows through a pipe 0.25 m internal diameter and 5 km long at the rate of 0.4 m3/s and is delivered at atmospheric pressure.