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miskamm [114]
3 years ago
15

Copernicus challenged the way in which people of his time thought about the solar system. How did Copernicus describe the motion

of the sun?
A.The sun is stationary.
B.The sun revolves around Earth.
C.The sun moves in an elliptical orbit.
D.The sun moves in a straight line through space.
Chemistry
1 answer:
Vedmedyk [2.9K]3 years ago
7 0

Answer:

A. The sun is stationary and we rotate around it.

Hope This Helps!

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How many moles of oxygen gas (O2) are required to completely react with 10 moles of hydrogen gas (H2)?
Brums [2.3K]

Answer:

5 moles of oxygen are required.

Explanation:

Given data:

Moles of O₂ required = ?

Moles of H₂ present = 10 mol

Solution:

Chemical equation:

O₂ + 2H₂       →     2H₂O

Now we will compare the moles of oxygen and hydrogen.

                      H₂        :        O₂

                        2         :         1

                       10         :     1/2×10 = 5 mol

5 moles of oxygen are required.

3 0
3 years ago
A reaction occurs in which hydrogen-1 and hydrogen-2 form helium-3. Is this a chemical reaction or a nuclear reaction, and how d
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7 0
3 years ago
Summarize the relationship between volume, temperature and pressure (use words like “inversely
Alinara [238K]

Answer:

P and V: inversely proportional

P and T: directly proportional

V and T: inversely proportional

Explanation:

For pressure and volume, as the volume goes up, meaning the container gets bigger, the pressure would go down. There would be more room in the container, so there would be less collisions between the molecules themselves and between the molecules and the container. This makes them inversely proportional.

For pressure and temperature, as the pressure goes up, there are more collisions, so the particles move faster. Temperature is the speed of the particles, so, since both pressure and temperature would go up at the same time, they are directly proportional.

For volume and temperature, this is similar to the PV relationship. As volume increases, there are less collisions between the particles. This means that the particles are going to move slower. Therefore, as volume goes up, temperature goes down, so they are inversely proportional.

Sorry this is super long, but I hope it fully explains the question for you! ☺

4 0
4 years ago
Having food in the stomach __________ the rate at which a person's BAL rises.
Andreyy89

Answer:

Explanation:

It rises Food in your stomach (Food slows down alcohol absorption. What's the best to eat? Protein! It takes the longest to digest)

5 0
3 years ago
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Calculate the mass (in grams) of 3.01x1021 atoms of cobalt (Co).
jolli1 [7]
The answer i got is 2.95 g Co
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3 years ago
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