When 1.550 g of liquid hexane (c6h14) undergoes combustion in a bomb calorimeter, the temperature rises from 25.87∘c to 38.13∘c. find δerxn for the reaction in kj/mol hexane. the heat capacity of the bomb calorimeter, determined in a separate experiment, is 5.73 kj/∘c. express your answer in kilojoules per mole to three significant figures.2. the combustion of toluene has a δerxn of –3.91×103 kj/mol. when 1.55 g of toluene (c7h8) undergoes combustion in a bomb calorimeter, the temperature rises from 23.12∘c to 37.57∘c. find the heat capacity of the bomb calorimeter. express the heat capacity in kilojoules per degree celsius to three significant

Explanation:

1). The given data is as follows.

       ,      

               C = 5.73

Hence, calculate the change in enthalpy of the reaction as follows.

                     =

                     = -70.25 KJ

As,  number of moles =

                                    =

                                    = 0.018 mol

Therefore, enthalpy of reaction in kJ/mol hexane is as follows.

                          = kJ/mol

Thus, we can conclude that for the reaction in kJ/mol hexane is kJ/mol .

2).  As we know that,

     Number of moles =

                                  =

                                   = 0.017 mol

                      =

                      = -65.875 kJ

As,    

                    -65.875 kJ =

                           C = 4.56

Hence, heat capacity of the bomb calorimeter is 4.56 .

i believe it is-

d.) gravity pulled particles of dust and gas together to form planets.

plants need sunlight, water, and carbon dioxide to make food. plants use the raw materials of water, nutrients they absorb from soil, and carbon dioxide to make sugars the plant can use. energy from the sun and chlorophyll are also needed.