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3 years ago

An astronaut has a mass of 60kg. Calculate their weight When they are on the surface of the moon.

Chemistry

1 answer:

IceJOKER [234]3 years ago

7 0

Answer:

I think 0kg because they are flying.

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A precipitate is a solid that sometimes forms when two liquids combine. A true B False

r-ruslan [8.4K]

<h2>Question:</h2>

A precipitate is a solid that sometimes forms when two liquids combine.

<h2>Answer:</h2>

A. True 

<h2>Explanation:</h2>

Because the Precipitate it's forms solid when two liquids combine to precipitate.

<h2>#CARRYONLEARNING </h2><h2>#STUDYWELL </h2>

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3 years ago

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What are valence electrons and why are they so important in chemistry?

stealth61 [152]

valance electrons that reside in the outermost shell of an atom in the highest energy level. They are important to atoms because the fewer valence electrons that the atom holds, it becomes less stable.

I take honors chemistry I hope this helps.

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3 years ago

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How is the pH of an acidic substance raised?

BabaBlast [244]

Answer: 4) Concentrate it

Explanation:

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3 years ago

Are C-12, C-13, and C-14 all carbon isotopes?

kramer

Answer:

Yes, they are isotopes.

Explanation:

Isotopes are atoms with the same atomic number Z and a different mass number (A). That is, they differ in the number of neutrons (eg carbon 12, has 6 protons, 6 electrons, and 6 neutrons, carbon 13, 7 neutrons, and carbon 14 8 neutrons).

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3 years ago

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Assuming the following materials will not mix,show how the materials would "Stack up" in a graduated cylinder.

mihalych1998 [28]

Answer:

Density is mass per unit volume.

Its formula is

Density = Mass / Volume

Its units can be kg/L or kg/( $dm^3$ ) or g/mL or g/( $cm^3$ )

Density of various substances are given. The more denser substance goes to the bottom of the graduated cylinder.

Air on the top then comes Wood followed by Corn oil followed by Ice and then Water followed by Glycerin then Rubber then Corn syrup and at last Steel at the bottom which will more denser than all the substances mentioned above.

The staking up of the substances is in the order mentioned below in the tabular column

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4 years ago