3NO, (g) + H20 (1) ---> 2HNO3 (aq) + NO (9) What mass of water is needed to react with 15.5 L of nitrogen dioxide at STP?​

Different isotopes indicate that an element will have different numbers of

16. why must the number of electrons lost equal the number of electrons gained in every redox reaction? use 3 – 4 sentences in your own words to address this question. 18. what type of radiation is emitted when chromium-51 decays into manganese-51? show the nuclear equation that leads you to this answer. 19. a radioactive nucleus alpha decays to yield a sodium-24 nucleus in 14.8 hours. what was the identity of the original nucleus? show the nuclear equation that leads you to this answer.

Mary is conducting an experiment on how pollution affects plant growth. how can she ensure that her data are reliable?