90 grams of lead (II) nitrate (Pb(NO3)2) are put into 100 grams of water and stirred. The final mixture has a temperature of 20∘C. About how many grams of lead (II) nitrate dissolved?

Why are people not able to scuba dive in the deep part of the ocean

In 2002, the rare earth elements mine in mountain pass, california was closed because

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.