>>12232595can't even solve a multiple choice problem. ngmi
what you need to do (purely algebraically, don't plug in numbers until the end) is
1) compute how much energy is needed to heat 150g H20 by 4.5 C'
2) compute how many mols of CaCl2 are needed to produce that much heat energy
3) compute how massive a mol of CaCl2 is
4) compute how much mass of CaCl2 you need
