Using 2 H2 + O2 → 2 H2O

If 3.00 moles of H2O are produced, how many grams of oxygen must be consumed?

a c d and f

just finished the assignment

while cooking a piece of 1/2 pound beef steak, a cast iron pan (2.4kg in weight) was heated 260 celsius.

a saline water is fed to a reverse osmosis unit at flow rate o rotameter connected to reject (retentate) line reads 8 installed in reject and permeate line reads 15.2 milli siemens/cm and 300 micro siemens/com respectively.

um i think it might be a car?