A 44.0 g sample of an unknown metal at 99.0 oC was placed in a constant-pressure calorimeter of negligible heat capacity containing 80.0 mL water at 24.0 oC. The final temperature of the system was found to be 28.4 oC. Calculate the Specific heat of the metal if density of water is 1.00 g/mL.

in the given question, the partial pressure is calculated by using the ideal gas equation, that is, pv = nrt

here, p is pressure, v is volume = 25 l, n is number of moles = 0.0104 moles, r is gas constant = -0.0821 l.atm / mol.k

t is temperature = 273 k

p = nrt / v

p = (0.0104 mol × 0.0821 l.atm / mol.k × 273 k) / 25 l

= 0.0093 atm

i believe it is a.) released into

explanation:

the answer is c. nacl