What are the two oxidation states of nitrogen in NH4NO2? 1. +3 and +5
2. +3 and -5
3. -3 and +3
4. -3 and -3

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.

Take a look at this dandelion. the yellow flower on the right is pollinated and the seeds on the left are transported by

At stp, which substance is the best conductor of electricity? a. nitrogen b. neon c. sulfur d. silver