Hydrogen and oxygen gas react to produce water according to the following unbalanced equation: H 2 (g) + O 2 (g) → H 2 O (g) How many grams of hydrogen gas will be needed to react with 0.25 mol of oxygen gas?

What is the molarity of 60.0 grams of naoh dissolved in 750 milliliters of water? a) 1.1 m b) 2.0 m c) 12 m d) 75 m

Americium-241 undergoes fission to produce three neutrons per fission event. if a neutron-absorbing material is mixed in with this sample so that the rate of neutron production drops down to 1.8 neutrons per fission event, which will be effective at achieving a critical mass? check all that apply. remove a deflective shield surrounding the sample. remove absorbent material mixed in with the sample. compress the sample of americium-241.

Drug abuse will not lead to physical and psychological dependence. true or false ?