Consider the chemical equations shown here. 2H2(g) + O2(g) → 2H2O(g) AH, = -483.6 kJ - 2 = -241.8 kJ/mol
302(g) → 20,(9) AH, = 284.6 kJ + 2 = 142.3 kJ/mol
What is the overall enthalpy of reaction for the equation shown below?
3H2(g) + 0,9) — 3H2O(g)
kJ

What layer of the atmosphere is directly above the troposphere?

One way that radioactive waste is treated is by burying it in repositories. the repositories are found only in states with very low populations. true or false? a. trueb. false(also i meant to put high school but it put down middle school instead)

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.