A chemist carefully measures the amount of heat needed to raise the temperature of a 1.28 kg sample of C H2S from -2.7 °C to 15.3 °C. The experiment shows that 4.60 x 10' J of heat are needed. What can the chemist report for the molar heat capacity of C, H,,S? Round your answer to 3 significant digits.

1.9965jkg-1

Explanation:

Heat gained=heat lost

1.28×18×c=46

46 =23.04c

46÷23.04= c

C=1.9965jkg-1

the number of valence electrons for each molecule or ion is shown beneath the structure. remember hydrogen will not have more than two electrons. this hydrogen is part of a covalent bond (sharing two electrons). a double bond here would cause hydrogen to share four electrons with phosphorus.

the answer is option a.