Consider the combustion of octane, a component of gasoline: c8h18(l)+252o2(g)→8co2(g)+9h2o(g) part a calculate δhrxn for the combustion of octane (c8h18) by using average bond energies. express the energy in kilojoules per mole to three significant figures.

Which of the following statements concerning the influence of culture on ethnic identity formation is accurate? a. one will reject ethnic identity if cultural stereotypes are encountered. b. if one’s ethnic city is different from the dominant cultural group, then one’s ethnic identity you will become weekend. c. if an the ethnic group is excepted by dominant culture, then ethnic identity formation can be a difficult process. d. similarity to the dominant culture can determine how easy it is for one to except ethnic differences.

Asa choose the correct set of reaction coefficients to properly balance the following chemical equation according to the law of conservation of mass: __s8 + __o2 ==> __so2 1, 1, 8 1, 8, 1 1, 8, 8 8, 1, 1

Chlorophyll a had the molecular formula c55h72mgn4o5 how many atoms are in this molecule