A1.00g sample of an acid was dissolved in enough water to create 100.0ml of aqueous solution. titrate it with 15.00ml of 1.058m naoh. determine the formula mass of the acid, assuming two acidic protons per formula unit.

If anyone would be able to me out with these three questions it would be these are from the chem 2202 course.

Acalorimeter is to be calibrated: 51.203 g of water at 55.2 degree c is added to a calorimeter containing 49.783 g of water at 23.5c. after stirring and waiting for the system to equilibrate, the final temperature reached is 37.6 degree c. specific heat capacity of water (s = 4.18 j/g∙degree c). calculate the calorimeter constant. (smδt)warm water = -[(smδt)cold water + (calorimeterδtcold water)]

To apply in a gold the individual gold atoms are united to each other by means of a metallic bond. how would you use the gold block to determine the atomic radius of a gold atom?