What does the atomic mass number on the periodic table tell you?

Consider the following system at equilibrium. caco3(s) ca2+(aq) + co32–(aq) the addition of which compound will cause a shift in equilibrium because of a common ion effect? ccl4 co2 cuso4 na2co3

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

Which symbol can be used to indicate the pressure at which a chemical reaction is carried out? 25°c 2 atm pa