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3 years ago

Some people believe that the Moon’s phases are caused by Earth’s shadows on the Moon. Is this true? Use your model to explain.

Chemistry

1 answer:

Kisachek [45]3 years ago

5 0

Answer: False

Some people believe that the Moon’s phases are caused by Earth’s shadows on the Moon is false.

Explanation:

Some people believe that the Moon’s phases are caused by Earth’s shadows on the Moon is their misconception. 

The phases depend on its place relative with sun and earth.The phases of moon are new moon,waxing crescent, first quarter, waxing gibbon, full moon, wanning gibbon,last quarter, wanning crescent,new moon.

For example, 

When moon, earth, and sun are exactly in the same line and moon lies in between earth and sun, the sun illuminates the back part of the moon which is not visible from earth. This forms new moon.

So only relative positions matter in the phases of moon. 

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Which particles have a similar relative mass

olganol [36]

Answer:

c ) protons and neutrons

Explanation:

Protons and neutrons have approximately the same mass, but they are both much more massive than electrons (approximately 2,000 times as massive as an electron). The positive charge on a proton is equal in magnitude to the negative charge on an electron.

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3 years ago

Does pb(no3)2 + Na3(PO4) = Pb3(PO4)2 + Na(NO3) have a precipitate?

ipn [44]

Answer:

Yes, Pb3(PO4)2.

Explanation:

Hello there!

In this case, according to the given balanced chemical reaction, it is possible to use the attached solubility series, it is possible to see that NaNO3 is soluble for the Na^+ and NO3^- ions intercept but insoluble for the Pb^3+ and PO4^2- when intercepting these two. In such a way, we infer that such reaction forms a precipitate of Pb3(PO4)2, lead (II) phosphate.

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3 years ago

What is the charge on an atom after it loses an electron during the formation of a bond?

NARA [144]

Answer:

One positive charge

Explanation:

In a neutral atom, the number of positive and negative particles are equal. This leaves the atom with a net charge of zero, 0.

When the number of protons in an atom is greater than the number of electrons, the atom becomes positively charged. When an atom loses an electron when a bond wants to form, it has a net positive charge.

The number of electrons lost or gained determines the charge.

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elena-s [515]

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Drupady [299]

Answer:

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