The coinage metals (group 1b) copper, silver, and gold have specific heats of 0.385, 0.233, and 0.129 j/g-k, respectively. among this group, the specific heat capacity and the molar heat capacity as the atomic weight increases.
(a) increases, increases.
(b) increases, decreases.
(c) decreases, increases.
(d) decreases, decreases

Dumbledore decides to gives a surprise demonstration. he starts with a hydrate of na2co3 which has a mass of 4.31 g before heating. after he heats it he finds the mass of the anhydrous compound is found to be 3.22 g. he asks everyone in class to determine the integer x in the hydrate: na2co3·xh2o; you should do this also. round your answer to the nearest integ