Choose the option below that is true of temperature changes. a. Increasing the temperature of an exothermic reaction will cause the system to shift toward the reactants. b. The internal energy of a system increases as temperature decreases. c. Temperature changes do not affect exclusively gaseous chemical systems. d. Temperature changes affect the reaction quotient but not the equilibrium constant.

The two naturally occurring isotopes of chlorine are 35cl (34.969 amu, 75.77%) and 37cl (36.966 amu, 24.23%). the two naturally occurring isotopes of bromine are 79br (78.918 rm amu, 50.69%) and 81br (80.916 amu, 49.31%). chlorine and bromine combine to form bromine monochloride, brcl. 1. how many peaks will be present in a mass spectrum for brcl? the four combinations of molecule possible given these four isotopes are: 81br37cl, 81br35cl, 79br37cl, and 79br35cl. 2. what are the masses of the four different brcl molecules? express the masses using six significant figures, in decreasing numeric order (highest to lowest), separated by commas.

The identities of substances are the same before and after which type of change

Correct relationship between molecular formula and empirical formula