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konstantin123 [22]
1 year ago
11

The diagram shows the molecular structure of water. A diagram representing a molecule of water is shown. There is an O at the to

p with an H branching to its left and another H branching to its right. The ratio of hydrogen atoms to oxygen atoms in water is always the same. How many oxygen atoms (O) are there when there are 8 hydrogen atoms (H)? Enter the correct answer in the box. oxygen atoms
Mathematics
1 answer:
GrogVix [38]1 year ago
8 0

By using ratio, it is obtained that if there are 8 atoms of hydrogen, there are 4 atoms of oxygen.

What is ratio?

Ratio is used to find a comparision between two quantities with the same unit

The first part of the ratio is called antecedant and the second part of the ratio is called consequent.

Here,

In a molecule of water, there are 2 atoms of hydrogen and 1 atom of oxygen

Ratio of hydrogen and oxygen = 2 : 1

Number of atoms of hydrogen = 8

Let the number of hydrogen atom be 2x and number of oxygen atom be x

By the problem,

2x = 8\\x = \frac{8}{2}\\x = 4

Number of oxygen atom = 4

To learn more about ratio, refer to the link -

brainly.com/question/25927869

#SPJ1

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Answer:

Therefore,

AD = 7 unit

AE = 600 unit

EF = 30 unit

FB = 5 unit

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Ar(ABCD)= 4445 unit²

Step-by-step explanation:

Given:

Consider a rectangle ABCD as shown in the figure below where,

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AE =?

EF = ?

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Ar(ABCD) =?

Solution:

We know that area of the rectangle is given by

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\textrm{Area of rectangle AEHD}= AE\times 7\\\\4200=AE\times 7\\\therefore AE=\dfrac{4200}{7}=600

Similarly for area rectangle FBCG,

\textrm{Area of rectangle FBCG}= FB\times 7\\\\35=FB\times 7\\\therefore FB=\dfrac{35}{7}=5

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Therefore,

AD = 7 unit

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EF = 30 unit

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