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Leni [432]
3 years ago
9

Which of the following is an inexhaustible energy resource?

Chemistry
1 answer:
koban [17]3 years ago
4 0
<u />C. Water is an inexhaustible energy resource among these options. Coal, oil, and natural gas we can run of, but for the foreseeable future, there will always be water.
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Based on the kinetic theory, which statement is true?
Effectus [21]

answer is A

The kinetic theory is used to explain the behaviour of gases.

One of the assumptions states that "a gas is composed of a large number of identical molecules moving at different speeds".

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Where are the alkali metals and alkaline earth metals and halogens and noble gases located in the periodic table?
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Enzymes are proteins that speed up chemical reactions in the body. How do they work?
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Sum of brother and sisters age is 26. Four times the brothers age is subtracted from three times the sisters age, the difference
lana66690 [7]

Answer : The ages of the brother and sister are, 10 and 16 years respectively.

Solution :

Let the age of brother be 'x' and the age of sister be 'y'

There are two equations formed which are,

x + y = 26      ..........(1)

3y - 4x = 8     ..........(2)

First we have to multiple equation (1) by 4 and then added equation (1) and (2), we get the value of 'y'.

4x+4y+3y-4x=8+26\\\\7y=112\\\\y=16

Now put the value of 'y' in equation (2), we get the value of 'x'

3(16) - 4x = 8

4x = 40

x = 10

The age of brother = x = 10 years

The age of sister = y = 16 years

Therefore, the ages of the brother and sister are, 10 and 16 years respectively.

3 0
3 years ago
Which of the following is not the same as 12.5 millimeters
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