Reações Nucleares: O isótopo do elemento Rubídio de número de massa 85 sofre decaimento segundo a equação a seguir. O número atômico do isótopo que X representa é igual a: *obs: Verifique o número atômico do Rb na Tabela Periódica*

a-) 38
b-) 36
c-) 86
d-) 84
a-) 37

Hey guys so i need to know what is _nh3+> nh4oh ~chemistry~

Liquid ammonia is produced at high temperatures and under great pressure in a tank by passing a mixture of nitrogen gas and hydrogen gas over an iron catalyst. the reaction is represented by the following equation. n2(g) + 3h2(g) → 2nh3(g) changing all but one experimental condition will affect the amount of ammonia produced. that condition is a) increasing the concentration of both reactants b) changing the temperature within the tank c) decreasing the pressure within the tank. d) increasing only the amount of nitrogen present.

You have a sample of a metal, the sample is exactly 6.02 x 1023atom, if the sample has a mass 55.85 what metal is your sample made of?