Question

which of the following contain largest number of atoms? A 8g of methane.B 15 gram of hydrogen fluoride.C 15.6g of benzene.D 21.8g of bromomethane​

Answer 1

Answer: A

Explanation:

Answer 2

Answer:

So, 15.6g of Benzene contains the largest amount of number of atoms.

Explanation:

For part A)

It is given that there is 8g of methane

So, number of moles = 8/16 = 0.5 moles pf methane

we know that 1 mole contains 5 x 6.023 x 10²³ atoms

Therefore 0.5 moles will contain = 2.5 x 6.023 x 10²³ atoms.

For part B)

It is given to us that there is 15g of HF

So, number of moles = 15/20 = 0.75 moles of HF.

we know that 1 mole of HF contains 2 x 6.023 x 10²³ atoms

Therefore, 0.75 moles of HF will contain = 1.5 x 6.023 x 10²³ atoms

For part C)

It is given that there is 15.6g of C₆H₆

So, number of moles = 15.6/78 = 0.2 moles of C₆H₆

we know that 1 mole contains 12 x 6.023 x 10²³ atoms

Therefore 0.2 moles will contain = 2.4 x 6.023 x 10²³ atoms.

For part D)

It is given that there is 21.8g of bromomethane

So, number of moles = 21.8/85 = 0.23 moles pf methane

we know that 1 mole contains 5 x 6.023 x 10²³ atoms

Therefore 0.23 moles will contain = 1.15 x 6.023 x 10²³ atoms.

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