Given the following equation: CO2 + H2O -> H2CO3 How many grams of CO2 are needed to react with 3.6 grams of
H2O?

3.6
7.2
8.8
1.8

The clouds are grey and ground is wet. a quantitative b qualitative

If anyone would be able to me out with these three questions it would be these are from the chem 2202 course.

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.