A1.11 g sample of caffeine, c8h10n4o2, burns in a constant-volume calorimeter that has a heat capacity of 7.85 kj/k. the temperature increases from 298.70 k to 303.81 k. what is the molar heat of combustion of caffeine (in

401135 kJ

Explanation:

From the balanced quation,

(q/n) = CΔE

Molar heat of combustion = 7.85kJk × (303.81-298.70)k

                                            = 7.85kj × 5.11

                                             = 40.1135kj

the answer is 1260

you spend 7 hours in school for 1 school day with 5 school days in 1 school week with 36 school weeks in a school year.

7*5*36= 1260 it's all about multiplying

you didnt put any of the following