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Yanka [14]
2 years ago
9

As energy moves out from the sun’s core toward its surface, it first travels by __________, then by __________, and then by ____

____
Chemistry
1 answer:
Lyrx [107]2 years ago
6 0

Energy leaves the Sun's core and goes by radiation, convection, and radiation on its way to the surface.

Energy leaves the sun's core and initially travels towards the radiation zone. In the radiation zone, the gas is tightly compressed. Here, electromagnetic waves are absorbed and reradiated to transfer energy. Energy can take more than 100,000 years to get through this area because it is so dense.

Thus, energy radiates out initially from the core before being delivered by convection to the outer layers.

To know more about Radiation refer:

brainly.com/question/1497235

#SPJ4

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40 g of CaCO3 is how many moles of CaCO3?<br> 10 moles<br> 0.4 moles<br> 40 moles<br> 100 moles
AleksandrR [38]

Answer:

0.4 moles

Explanation:

To convert between moles and grams you need the molar mass of the compound. The molar mass of of CaCO3 is 100.09g/mol. You use that as the unit converter.

40gCaCO3* 1mol CaCO3/100.09gCaCO3 = 0.399640 mol CaCO3

This rounds to 0.4 moles CaCO3

8 0
3 years ago
If 10.0 g water at 0.0°C is mixed with 20.0 g of water at 30.0°C what is the final temperature of the mixture?
Bond [772]

Answer:

1.67 gradius Celcius

Explanation:

Please see the step-by-step solution in the picture attached below.

Hope this answer can help you. Have a nice day!

7 0
3 years ago
A bond between a nonmetal and a nonmetal is called a(n)
Pani-rosa [81]

Answer:

answer: B

Explanation:

becaucse it is B

7 0
2 years ago
Read 2 more answers
How many moles of Cl- ions are needed to completely combine with 0.25 moles of Mg+2 ions?
Mnenie [13.5K]
<span>The number of moles of Cl- ions needed to combine completely with 0.25 mole of Mg+2 ions is:
0.50.</span>
4 0
3 years ago
Which of the following item(s) explain the differences between the Ka values. Choose one or more: A. The negative charge is on t
AVprozaik [17]

Answer:

D. The electron-withdrawing fluorine atoms pull electron density from the oxygen in trifluoroacetate. The negative charge is more stabilized in trifluoroacetate by this effect.

Explanation:

The structures of trifluoroacetate and acetic acid are both shown in the image attached.

The trifluoroacetate anion (CF3CO2-), just like the acetate anion has in the middle, two oxygen atoms.

However, in the trifluoroacetate anion, there are also three electronegative fluorine atoms attached to the nearby carbon atom attached to the carbonyl, and these pull some electron density through the sigma bonding network away from the oxygen atoms, thereby spreading out the negative charge further. This effect, called the "inductive effect" stabilizes the anion formed,the trifouoroacetate anion is thus more stabilized than the acetate anion.

Hence, trifluoroacetic acid is a stronger acid than acetic acid, having a pKa of -0.18.

5 0
3 years ago
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