Question

solve it ❤️

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Answer 1

Step-by-step explanation:

Hey

We know that molecular mass of CO2

= 12 +(16 x 2)

= 44.0g/mol

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One mole of Co2 weighs 44g

Hence we need to find number of moles in 22g

Let the number of moles in 22g of CO2 be x

44.0g = 1 mol ------(1)

22.O = x mol-------(2)

Cross-Multiplying eq(1) and eq(2)

44x = 22

x = 0.5

Therefore there are 0.5 mol in 22.0g of CO2

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No of molecules in 1 mol = 6.022 x10²³

No of molecules in 0.5 mol = 6.022 x 10²³ x 0.5

= 3.011 x 10²³

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Answer 2

Answer:

3.01 * 10²³ molecules.

Step-by-step explanation:

Note:

In carbon dioxide's case, its molar mass is equal to 44.01 g/mol, which means that every mole of CO₂ will have a mass of 44.01 g.

We know that,

1 mole of CO₂ = 6.022 * 10²³ electrons.

Then,

22 mole of CO₂ = (22 * 6.022 * 10²³)/44.01

                          = (6.022 * 10²³ * 0.5)

                          = 3.01 * 10²³ molecules.

Therefore,

Number of molecules =  3.01 * 10²³.

Hope it helps!