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mestny [16]
2 years ago
13

What's a wind up toy useful energy output

Chemistry
1 answer:
exis [7]2 years ago
6 0
Potential energy stored in a spring => kinetic energy of a toy
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In the formula for water ,(H2O), what does the lack of subscript after the O indicate?
ladessa [460]
I believe its B. <span>The chemical formula for water H2O represents 2 hydrogen and 1 oxygen in the compound.  </span>
4 0
2 years ago
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1. What organisms keeps the ecosystem going but you can't see them with the naked eye?
jok3333 [9.3K]

Answer:

The answer is bacteria (microorganisms)

Explanation:

Bacteria can't be seen with the naked eye but it's part of a species that make up the biodiversity.

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Why is salt added to hot chicken soups during cooking besides giving the chicken soups a good taste?
SIZIF [17.4K]

Answer:

The answer is option 3.

Explanation:

When salt is added to the water, the boiling point increases because it needs to take in more energy from heat to <u>b</u><u>r</u><u>e</u><u>a</u><u>k</u><u> </u><u>d</u><u>o</u><u>w</u><u>n</u> the bonds and dissolve the salt in the water.

(Correct me if I am wrong)

5 0
2 years ago
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The formula ca(no3)2 tells us that one formula unit of this compound is composed of ________ calcium atoms, ________ nitrogen at
ad-work [718]

Answer:- The formula Ca(NO_3)_2 tells us that one formula unit of this compound is composed of one calcium atom, two nitrogen atoms, and six oxygen atoms.

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When we have subscripts inside and outside the parenthesis then they are multiplied and the outside subscript is considered for all the atoms present inside the parenthesis.

Here, for the given chemical formula, the subscript of N is 1 and the subscript present outside is 2. So, 1 x 2 = 2 and for oxygen, 3 x 2 = 6

So, we have one calcium atom, two nitrogen atoms and six oxygen atoms for one formula unit of given compound.

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3 years ago
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Sedbober [7]

An electrode is an electrical conductor used to make contact with a nonmetallic part of a circuit The word was coined by William Wheel at the request of the scientist Michael Faraday from the Greek words electron, meaning amber and hods, a way.

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