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3 years ago

What appears to happen to the moon as it goes through the cucle

Chemistry

2 answers:

Aloiza [94]3 years ago

6 0

The way the earth Orbit

IRISSAK [1]3 years ago

3 0

What appears to happen is the moon disapears little by little. but what you actually see is the shadow of the earth blocking some light from the sun.

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How many valence electrons are there in Se atom?

Lena [83]

Answer:

4 valence electrons

Despite the fact that the word silicon has a ubiquitous affiliation with all things electronic, Si itself is not a good electrical conductor. It has 4 valence electrons, meaning that filling its outer shell it can form a very strong lattice with 4 neighboring Si atoms-with no un-bonded electrons remaining

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3 years ago

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Which of the following is not an example of a molecule?

9966 [12]

D. F

Molecules are a group of bonded atoms but Fluorine stands on its own

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4 years ago

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What is the quickest way to change liquid to gas

Ann [662]

Heat. When heat is appplied to liquid it turns into gas.

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3 years ago

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In a particular redox reaction, Cr is oxidized to CrO42– and Cu2 is reduced to Cu . Complete and balance the equation for this r

Alisiya [41]

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3 years ago

Determine whether each of the following statements about sulfur oxide and/or nitrogen oxide pollution is true or false.

astraxan [27]

Answer:

a) False

b) False

c) True

Explanation:

a) Most sulfur oxides formed during combustion come from sulfur in the air: The sulfur burns in presence of oxygen to produce sulfur oxides, the source of sulfur is anthropogenic activities (Human activities).

So the given statement is false.

b) A flue gas scrubber removes SO2 pollution in a coal-fired power plant by using lime to convert the SO2 into alcohols:

False

The lime reacts with sulfur dioxide to give carbon dioxide and calcium sulfite.

$CaCO_{3}+SO_{2}--->CaSO_{3}+CO_{2}$

c) True

3 0

3 years ago