During the Big Bang, what were the two main chemical elements created?

2 answers:

4 0

During the big band only the lightest elements were formed – hydrogen and helium along with trace amounts of lithium and beryllium.

Tasya [4]3 years ago

3 0

this is the answer I got hydrogen and helium

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A student needed to dissolve a substance that she knew was soluble in water. according to the chart, which other solvent would m

Dmitry [639]

The chart is attached below and the options are as follow,

A Benzene

B Methanol

C Hexane

D Octane

Answer:
Option-B (Methanol) is the correct answer.

Explanation:
As we know that the substance given to student is soluble in water. Therefore, those substances which are soluble in water are polar in nature because water is polar in nature and Like Dissolves Like.
Hence, in chart it can easily be seen that Methanol is also polar in nature due to presence of -O-H (polar) bond. So, the substance will dissolve in it.

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3 years ago

Which of these are associated with the solar wind? Check all that apply.

WINSTONCH [101]

Answer:

Disrupts communication systems

Composed of charged particles

travels at about 400 km/s

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3 years ago

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How can the speed of solvent molecules be slowed down? A. By increasing the temperature B. By increasing the surface area of the

SVEN [57.7K]

Answer:

Explanation:

If by speed ,you mean the rate at which they collide with each other then yes the answer would be

By decreasing the temperature

Since we already know thattemperature is the average kinetic energy of the molecules and increasing temperature will increase the motion of the solvent molecules and an decrease in temperature will decrease in the motion of solvent molecules

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4 years ago

How do atoms and elements differ from each other?

strojnjashka [21]

Answer:

A particular atom will have the same number of protons and electrons and most atoms have at least as many neutrons as protons. An element is a substance that is made entirely from one type of atom. For example, the element hydrogen is made from atoms containing just one proton and one electron.

Explanation:

8 0

3 years ago

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Researchers can use solvents to extract, or break apart, components of a cell or tissue to separate and/or isolate components. I

Tems11 [23]

The cell membrane which is more fat permeable will be present at the end of the process.

Solvent extraction is a very important method if separating mixtures. The principle of solvent extraction is based on the idea of like dissolves like. A substance dissolves in the component of the system in which it is most soluble.

If a cell extract is dissolved in a nonpolar solvent, the cell membrane which is mostly permeable to nonpolar molecules will dissolve most in the solvent.

Learn more:brainly.com/question/14396802

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2 years ago