Chem quiz chap 3

developing countries not required

Both the clinton and GW bush administrations were unwilling to sign the Kyoto Protocol. What was their primary objection to the treaty?

planting trees, pumping carbon

Which practices might be described as carbon sequestration?

all

in order to make useful predictions, which factors must be accounted for by climate models?

nonbonding electron pair occupies greater space

the o-to-o-to-o bond angle in an ozone (O3) molecule is not exactly 120 because

11

What is the coefficient for oxygen in the balanced chemical equation for the combustion of heptane (C7H16)?

85%

although coal is a complex mixture of substances, its elemental composition can be approximated by the formula C135H96O9NS. Using this chemical formula, calculate the percentage, by mass of carbon (C) in coal

120

based on the electronic configuration shown in the Lewis structure, predict the O --- C --- O bond angle in degrees

1.16x10-18 g

calculate the mass of 2.50 x 104 molecules of nitrogen gas

295.3 g/mol

determine the molar mass for fluxoetine also known as prozac

trigonal pyramidal

determine the shape of geometry of PH3

forcings

factors that affect the annual global mean surface temperature

carbon cycle

movement of carbon through living organisms, the atmosphere, the sea, and the earth

1H/2H ratio

scientists believe they know the average global temperature over the last 160,000 years. Which property of the ice core samples from Antartica provide this information?

80; 80

the greenhouse and enhanced greenhouse effects refer to the return of approximately ___ percent and greater than ___ percent of the heat radiated by earth

bacterial removal of nitrate ions

the majority of N2O molecules in the atmosphere come from

h2o vapor

the most abundant greenhouse gas in earths atmosphere is

uptake by atmosphere

these data show the movement of carbon through its various forms on earth. Which value is known with the smallest percent error?

increases the vibration of chemical bonds

what is the effect of infrared energy on matter?

human-caused emissions are the main factor

which conclusion was considered "very likely" in the 2007 report of the intergovernmental panel on climate change?

clouds are composed of water vapor

which explanation accounts for the fact that, on average, cloudy nights are warmer than clear nights?

energy radiated

which process plays the most important role in the greenhouse effect?

carbon dioxide, nitrous oxide, sulfur hexa

which substances are regulated by the Kyoto Protocol?