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How do scientists use ice to study ancient climates?
A. through glacial deposits and...
Chemistry, 12.08.2020 08:01 BrainGeek4848
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How do scientists use ice to study ancient climates?
A. through glacial deposits and ice cores
B. through glacial deposits and ice ages
C. through ice cores and pollen grains
D. through pollen grains and ice ages
Which greenhouse gas is produced by commercial refrigeration and air conditioning systems?
A. carbon dioxide
B. fluorinated gas
C. nitrous oxide
D. methane
Answers: 3
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2h2s + 3o2 2so2 + 2h2o which option gives the correct mole ratios? h2s: so2 = 2: 2 and o2: h2o = 3: 2 h2s: so2 = 2: 3 and o2: h2o = 3: 2 h2s: so2 = 4: 4 and o2: h2o = 5: 4 h2s: so2 = 4: 6 and o2: h2o = 4: 4
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Significant figures are digits read directly from the measuring instrument plus one more digit, which is __ by the observer.
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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
Answers: 1
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