The heat of solution for NaOH is -445.1kJ/mol. In an experiment, 5.00g of NaOH is completely dissolved in 1,000g of 20.0°C water in a foam cup calorimeter. Calculate
the final temperature of the water. (Cwater = 4.18 J/gx°C and NaOH is 40.0g/mol) plz show work

Ican determine the molar mass of an element by looking on the under the atomic mass for the element. for example the molar mass of phosphorus is 30.974 grams/mole. avogadro’s number tells me the amount of representative particles in 1 mole of any substance. this means 12.011 gram sample of carbon and a 32.0 gram sample of sulfur have the same number of atoms.

How many moles of oxygen react with 12 moles of aluminum

Acertain atom has 22 protons and 19 electrons. this atom loses an electron. the net charge on the atom is now 4+1+01-4-. if this same atom with 22 protons and 19 electrons were to gain 3 electrons, the net charge on the atom would be 3+2+02-3-.