When 6.00 grams of a salt with a molar mass of 101 g/mol is dissolved in 110. grams of water, the temperature of the water decreases from 20.5°C to 16.0°C. What is the change in enthalpy
in kJ/mol for this process?
O A) +2.07 kJ/mol
O B) +35 kJ/mol
OC) -35 kJ/mol
OD) -2.07 kJ/mol

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.