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VMariaS [17]
2 years ago
12

How many molecules are in 18moles of CH.​

Chemistry
1 answer:
-Dominant- [34]2 years ago
8 0

Answer:

1.08 x 10²⁵molecules

Explanation:

From the mole concept we know that ;

      1 mole of any substance contains 6.02 x 10²³ molecules

This number is the Avogadro's number.

 So;

  18 mole of CH will contain:

       Number of molecules of CH  = 18 x 6.02 x 10²³ = 1.08 x 10²⁵molecules

The number of molecules is therefore 1.08 x 10²⁵molecules

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Answer:

D.

Explanation:

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Since there are 5 carbons so the suffix used is "pent"

There is a triple bond so its alkyne

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Then,

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What is the percent composition each element in c6h8o6
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Answer:

Percentage of oxygen = 30%

Percentage of carbon = 30%

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Explanation:

Formula:

Percentage of element = given amount / total amount × 100

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Percentage of oxygen = 6/20 × 100

Percentage of oxygen = 30%

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