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alisha [4.7K]
2 years ago
12

Which of these statements about the Sun is accurate?

Chemistry
2 answers:
Ymorist [56]2 years ago
8 0

C.

The energy produced by the Sun comes from nuclear fusion reactions.

Explanation

during formation of the solar system the centrifugal force of the sun caused it to collapse on it's self initialising nuclear fusion.

Novay_Z [31]2 years ago
7 0

Answer:

the answer is C The energy produced by the Sun comes from nuclear fusion reactions.

Explanation:

i took the test

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As temperature increase and the volume stays constant, how will the pressure change
crimeas [40]

Answer:

There will be more collisions and so a greater pressure. The number of particles is proportional to pressure, if the volume of the container and the temperature remain constant. ... Volume is inversely proportional to pressure, if the number of particles and the temperature are constant.

5 0
2 years ago
Calculate the molality of a 5.73 M ethanol (C2H5OH) solution whose density is 0.9327 g/mL.
Natalka [10]

Answer:

Molality = 8.57 m

Explanation:

Given data:

Molarity of solution = 5.73 M

density = 0.9327 g/mL

Molality of solution = ?

Solution:

Molality = moles of solute / kg of solvent.

Kg of solvent:

Mass of 1 L solution = density× volume

Mass of 1 L solution = 0.9327 g/mL × 1000 mL

Mass of 1 L solution = 932.7 g

Mass of solute:

Mass of 1 L = number of moles  × molar mass

Mass = 5.73 mol  × 46.068 g/mol

Mass = 263.97 g

Mass of solvent:

Mass of solvent = mass of solution - mass of solute

Mass of solvent = 932.7 g - 263.97 g

Mass of solvent = 668.73 g

In Kg = 668.73 /1000 = 0.6687 Kg

Molality:

Molality = number of moles of solute / mass of solvent in Kg

Molality = 5.73 mol /  0.6687 Kg

Molality = 8.57 m

4 0
2 years ago
___________________ is a substance that reduces surface tension (Ex. Soap)
Daniel [21]

Answer:

Surfactant. Surfactant, also called surface-active agent, substance such as a detergent that, when added to a liquid, reduces its surface tension, thereby increasing its spreading and wetting properties

Explanation:

6 0
3 years ago
Hhheppppp fffaaast
umka21 [38]

Answer:

False

Explanation:

Lead sulfate is insoluble in water and sinks in water

(sorry if it's wrong)

4 0
2 years ago
How many atoms are in 2 moles of carbon​
ollegr [7]

Answer:

Explanation:

2 mole x 6.023x 10^23atoms/mole =12.04 atoms

4 0
2 years ago
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