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drek231 [11]
3 years ago
7

Which statement describes how stars are born? Check all that apply

Chemistry
2 answers:
Citrus2011 [14]3 years ago
6 0

Answer:

can you send the answer choices?

Explanation:

faust18 [17]3 years ago
4 0

Answer:

the answers are 1,2,4,5

Explanation:

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Which gas would have the slowest rate of diffusion, assuming that all gases are at the same temperature?
Iteru [2.4K]

Answer: radon (atomic mass 222 amu

Explanation:

To calculate the rate of diffusion of gas, we use Graham's Law.

This law states that the rate of effusion or diffusion of gas is inversely proportional to the square root of the molar mass of the gas. The equation given by this law follows:

\text{Rate of diffusion}\propto \frac{1}{\sqrt{\text{Molar mass of the gas}}}

atomic mass of krypton= 83.8 amu

atomic mass of argon= 39.95 amu

atomic mass of xenon = 131.3 amu

atomic mass of radon= 222 amu

Thus as atomic mass of radon is highest, its rate of diffusion is slowest.

7 0
3 years ago
Seasonal variation on earth is due to the
Iteru [2.4K]

The tilt of the Earth on its axis is what causes the seasons.

7 0
3 years ago
7. (04wP2-5)Elements with atomic number 21 to 30 are d-block elements.
Katyanochek1 [597]

Answer :

  • (a) zn

Explanation:

  • (b) a ligand is an ion or molecule that binds to the central metal atom to form a cordinate complex.
  • (c)
<h3> above</h3>

3 0
3 years ago
Although chemical digestion occurs throughout the digestive system, it mostly occurs in the: Aesophagus and stomach B) liver and
frez [133]

Answer:

The digestive role of the liver is to produce bile and export it to the duodenum. The gallbladder primarily stores, concentrates, and releases bile. The pancreas produces pancreatic juice, which contains digestive enzymes and bicarbonate ions, and delivers it to the duodenum.

Explanation:

The chemical process of digestion begins during chewing as food mixes with ... The esophagus is a tubular organ that connects the mouth to the stomach. ... Acid reflux or “heartburn” occurs when the acidic digestive juices escape into the esophagus. ... The secretions of the liver, pancreas, and gallbladder are regulated by ...

-Both our right just choose one,

6 0
3 years ago
Someone please help me figure this out!!
zavuch27 [327]

Answer: from what i can tell it looks like a heterogeneous mixture

Explanation:

heterogeneous is multiple different components, homogenous includes only the same component

7 0
3 years ago
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