Chemistry, 18.05.2021 03:30 andreanb3238
1. Scientists infer that most of Earth's earliest atmosphere was produced by
(1) a collision with a giant gas cloud
(2) capturing gases from a nearby planet
(3) vaporizing comets that impacted Earth's surface
(4) the escape of gases from Earth's molten surface
2. What percentage of Earth's history represents human existence?
(1) less than 1.0% (2) 1.8%
(3) 23.5%
v
(4) more than 98.6%
3. During which period in geologic history did the uplifting of the Adirondack Mountains begin?
(1) Quaternary
(2) Cretaceous (3) Triassic
(4) Cambrian
4. The graph below shows the decay of a radioactive material over time.
Answers: 2
Chemistry, 22.06.2019 03:40, jude3412
In an effort to address concerns about global warming, a power plant in portland, oregon is designed to take all of its exhaust gases from its boilers and recycle the co2 using the solvay process to make sodium hydrogen carbonate. the reaction is shown below. nh3(g) + h2o(l) + co2(g) + nacl(aq) → nahco3(aq) + nh4cl(aq) how many liters each of nh3 and co2 (both at stp) would be consumed to produce 3.00 kg of sodium bicarbonate? the volume of both nh3 and co2 would be
Answers: 1
Chemistry, 22.06.2019 08:30, ebigham5117
If i initially have a gas at a pressure of 12 atm, a volume of 23 liters, and a temperature of 200 k, and then i raise the pressure to 14 atm and increase the temperature to 300 k, what is the new volume of the gas?
Answers: 2
Chemistry, 22.06.2019 11:30, claudr03
If we compare and contrast electromagnetic waves with sound waves, all but one statement is true. that is a) sound waves require a medium to travel while electromagnetic waves do not. b) electromagnetic waves can travel through the vacuum of space while sound waves cannot. c) electromagnetic waves must have a medium in which to travel, but sound waves can travel anywhere. eliminate d) sound waves must bounce off of matter in order to travel while electromagnetic waves do not require matter to be present.
Answers: 3
1. Scientists infer that most of Earth's earliest atmosphere was produced by
(1) a collision with a...
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