Calculate the heat energy needed to heat 45.0 g of copper from 23.0°C to 30.0°C. Use chart above for specific heat of water. Use units and show all work.

How many atoms or molecules are there in a mole of a substance?

Magnesium is the limiting reactant in this experiment. calculate the theoretical yield of mgo for each trial. trial 1: trial 2: data mass of empty crucible with lid trial 1: 26.688 trial 2: 26.681 mass of mg metal, crucible, and lid trial 1: 26.994 trial: 2 26.985 mass of mgo, crucible, and lid trial 1: 27.188 trial 2: 27.180

Type the letter that represents the correct location for each particle type below. the neutron is found at __ the electron is found at __ the proton is found at __