A science class did an investigation to see how many breaths it took for each student to blow up a balloon. Mike thinks that he took fewer breaths than his friends to blow up his balloon because he takes clarinet lessons and they don't. Does his reason make sense?
A.
No, playing a wind instrument make his lungs weaker.
B.
No, playing a wind instrument makes his lungs stronger.
C.
Yes, playing a wind instrument makes his lungs stronger.

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.