How is looking for a bf I’m 13

Ahypothesis must be testable and falsifiable to be considered scientific a. trueb. false

If you burn 46.6 g of hydrogen and produce 416 g of water, how much oxygen reacted

At 35.0°c and 3.00 atm pressure, a gas has a volume of 1.40 l. what pressure does the gas have at 0.00°c and a volume of 0.950 l? which equation should you use? p2= p1v1t2/t1v2what is the pressure of the gas? 3.92 atm these are the answers