Chemistry, 29.04.2021 19:00 bbostter3578
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air contains about 78% nitrogen and 21% oxygen. Based on this information, one can conclude that air?
A. is a pure substance.
B. is a mixture of at least two gases.
C. consists of different states of matter.
D. consists of components that are chemically joined.
Answers: 3
Chemistry, 21.06.2019 17:30
Which uses electromagnetic radiation to discover the properties and composition of bodies in space? space probe space station space shuttle space observatory
Answers: 2
Chemistry, 22.06.2019 00:00
How did planetesmals form planets? a. they broke apart into smaller chunks.b. they collided and stuck together.c. they cooled and pulled ice together.d. they began to rotate.
Answers: 1
Chemistry, 22.06.2019 11:40
Consider this equilibrium: n29) + o2(g) + 2no(c).nitrogen gas and oxygen gas react when placed in a closed container. as the reaction proceeds towards equilibrium, what happens to the rate of thereverse reaction?
Answers: 1
Chemistry, 22.06.2019 17:50
You exhale co2 which is produced during cellular respiration. co2 combines with the water in your blood's plasma to make up one half of the body's most important buffer pair, carbonic acid. the more physical activity you engage in, the more co2 your body is producing. you can see this by putting some of the cabbage indicator in a glass and then blowing bubbles into it through a straw. can you see a change in the color of the indicator?
Answers: 2
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air contains about 78% nitrogen and 21% oxygen. Based on this information, one can conclu...
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