Express by means of the common prefixes the following numbers. Consider 3 significant figures a) 45,382 grams=
b) 2000,000 grams=
c) 0.0107 grams=
d) 0.0000555 grams=

When you mate two plants together the terms is called? answer it fast as possible plz! i have a test tomorrow!

Classify this reaction: 2al+n2-> aln.

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.