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NISA [10]
2 years ago
10

Help please ! ASAP neeeeeed and answerrrrrr

Chemistry
2 answers:
ivann1987 [24]2 years ago
7 0

Answer:

A. Heater will only become warm when switch is closed.

Explanation:

Switches are used to control the flow of electrons (basically electricity). If you look at the other trials, you see that when switch is open, the bulb or fan does not run cuz no electricity can get to them. But when switch is closed, electricity gets to them. Thus, they will experience similar thing with the heater I assume cuz they have not said anything about battery voltage or anything preventing heater from heating.

Luden [163]2 years ago
6 0

Answer:

The answer is D

Explanation:

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Which form of bonding has unequal sharing of electrons between two elements?
Vlad1618 [11]

Hello!

Your answer would be polar covalent.

Covalent bonds are where two atoms come together, and share electrons between each other, and are therefore, bonded.

In some cases of molecules that are bonded with a covalent bond, one of the atoms is more, you could call it selfish, and takes more of the electrons. A prime example of this is H20, or water. One of the atoms takes the electrons for longer, and therefore has a more negative charge because electrons are counted as negative charges.

This bond where an atom "hogs" electrons, is called a polar covalent bond, respective to the changing charges for the atoms.

So your answer is d.

Hope this helped!

6 0
3 years ago
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allsm [11]

Answer:

Density of the substance is 0.7

Explanation:

4.2/6 = 0.7

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The chemical formula of lead sulfide tells you that it contains<br>​
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