A 3.180 g sample containing KHP was dissolved in approximate…

A 3.180 g sample containing KHP was dissolved in approximately 50.00 mL of water. This resulting solution required 30.180 mL of 0.250 M NaOH solution to neutralize it. What percent of the solid sample was pure KHP? (Assume no other acids are present. KHP = Potassium hydrogenphthalate KHC8H4O4; the molar mass= 204.22 g/mol) (Hint: Balance the reaction. KHP has ONE acidic H, hence, the reaction ratio is 1:1)

A calorimeter is to be calibrated:  51.203 g of water at 55….

A calorimeter is to be calibrated:  51.203 g of water at 55.2 Celsius is added  to a calorimeter containing 49.783 g of water at 23.5 Celsius. After stirring and waiting for the system to equilibrate, the final temperature reached 37.6 Celsius. Calculate the calorimeter constant.  Heat =mass X specific heat X change in temperature