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2 years ago

How many molecules are in the substance formula of 2C6H1206 (use coefficients)

Chemistry

1 answer:

FrozenT [24]2 years ago

6 0

<u>Answer:</u> The number of formula units present in 2 moles of $C_6H_{12}O_6$ are $1.2044\times 10^{24}$

<u>Explanation:</u>

Formula units are defined as the number of molecules or atoms present in 1 mole of a compound or element respectively.

According to mole concept:

1 mole of a compound contains $6.022\times 10^{23}$ number of formula units

Here, 2 represents the number of moles of $C_6H_{12}O_6$

We are given:

Moles of $C_6H_{12}O_6$ (glucose) = 2 moles

Number of formula units of $C_6H_{12}O_6=(2\times 6.022\times 10^{23})=1.2044\times 10^{24}$

Hence, the number of formula units present in 2 moles of $C_6H_{12}O_6$ are $1.2044\times 10^{24}$

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3 years ago

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3 years ago

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If you measured out 100.0g of water, how many molecules of water would you have drank?

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<h3>Answer:</h3>

3.342 x 10^24 molecules of water

<h3>Explanation:</h3>

Given;

Mass of water = 100.0 g

Required to determine the number of molecules in 100.0 g of water

Using Avogadro's constant

1 mole of a compound contains 6.022 × 10^22 molecules

Thus;

1 mole of H₂O contains 6.022 × 10^23 molecules

But;

1 mole = 18.02 g/mol

Therefore;

18.02 g of water contains 6.022 × 10^23 molecules

100.0 g of water will have;

= (100. 0 g ×6.022 × 10^23 molecules) ÷ 18.02

= 3.342 x 10^24 molecules

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