What is the purpose of the scientific method? A. To use an experiment to test a scientific theory

B. To make a guess in order to prove a hypothesis

C. To remove any source of bias in an experiment

D. To provide a reliable answer to a specific question

Which object forms when a supergiant runs out of fuel? a red giant a black hole a white dwarf a neutron star

What type of matter is made of only one kind of atom

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.