How many grams of hydrogen are needed to produce 1.80g of water according to this equation 2h2+o2= 2h2o

What pressure will be exerted by 0.675 moles of a gas at 25*c if it is in a 0.750-l container?

22. a flask containing 450 ml of 0.50 m h2so4 was accidentally knocked to the floor. how many grams of nahco, do you need to put on the spill to neutralize the acid according to the following equation: h2so4(aq)+2 nahcos(aq) na,so(aq) +2 h20()+2 co2(g) d) 38 g a) 2.3 g b) 9.5 g c) 19 g

An atom of which element reacts with an atom of hydrogen to form a bond with the greatest degree of polarity ?