Hydrozine (N2H4) emits a large quantity of energy when it reacts with oxygen, which has
led to its use as a fuel for rockets:
N2H4(l) + O2(g) → N2(g) + 2 H2O(g).
How many grams of water are produced
when 16 g of pure hydrazine is ignited in the
presence of 34 g of pure oxygen?
Answer in units of g.

Which of the following is a testable hypothesis? a. if i brush my teeth, i will get fewer cavities than if i don't brush my teeth. b. green toothpaste tastes better than blue toothpaste or red toothpaste. c. smart, careful, healthy people always brush their teeth. d. it's wrong to not brush your teeth before you have an important conversation with someone.

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.

Stage in which a star’s outer layers have started to cool and grow outward?