Which of the mole ratios would be used to set up the below problem? how many liters of ammonia gas (nh3), can be formed from 54.1 liters of hydrogen gas (h2) at stp? 3h2 + n2 --> 2nh3 question options: a.3 moles h2 1 mole n2 b.3 moles h2 1 mole nh3 c.2 moles nh3 3 moles h2 d.1 mole n2 2 mole nh3

In a floral arrangement, the focal area is often

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.

Which of the following are sources of revenue for media companies? a. direct sales to producers b. advertising and subscriptions c. online purchase d. capital investments