PLEASE HELP A 60mL HCl solution is titrated with 25mL of a 0.60M KOH solution. What is the concentration of the HCl solution?

1) 2.5 mol/L
2) 0.65 mol/L
3) 1.56 mol/L
4) 0.25 mol/L

In order to calculate the amount of heat transferred you must know the __ and specific heat of the material, as well as the change in temperature. a. volume b. density c. mass d. enthalpy

What does the mass of 0.7891 mol of ferric oxide (fe2o3)

A50.0g sample of liquid water at 0.0 c ends up as ice at -20.0 c. how much energy is involved in this change?