The relative atomic mass of a proton or neutron is

ASAP pls

What diagram shows the ionic compound of magnesium oxide

Find the mass, in grams, of 5.00*10^23 molecules of f2

A155.0 9 piece of copper at 182 °c is dropped into 2500 g of water at 23.9 °c. (the specific heat of copper is 0.385 1/9°c.) calculate the final temperature of the mixture. (assume no heat loss to the surroundings.)