4fe + 3o2 → 2fe2o3 iron combines with oxygen to form rust. given the chemical reaction, how many grams of 4fe + 3o2 would produce 10 kg of rust? a) 7 kg b) 10 kg c) 30 kg d) 70 kg

2kg of refrigerant 134a undergoes a polytropic process in a piston-cylinder assembly from an initial state of saturated vapor at 2 bar to a final state of 12 bar, 80 degree c. a)determine the work for the process in kj. b)sketch the process on a p-v diagram.

What is the increase in density of a medium due to wave travel?

Which basic property determines a colored light's placement on the spectrum of visible light? a. speed b. frequency c. amplitude d. velocity