Sound waves travel at different speeds through different material. Through which of the following materials will sound waves travel fastest? A. Lead (metal) pipe

B. Air on a cold winter’s morn

C. Swimming pool

D. Sauna filled with steam (water vapor)

Which of the following mining methods disrupts the sea floor?

In pqr m< p=60 m< q= 30 and m

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.