A sample of ch4o with a mass of 32.0 g contains __________ molecules of ch4o. group of answer choices 5.32 ´ 10-23 1.00 1.88 ´ 1

Question

2 years ago

15

022 6.02 ´ 1023 32.0

1 answer:

LekaFEV [45] · Answer 1 · 2023-04-17T18:08:00+03:00

The correct option is (C) 6.02 X 10²³

A sample of CH₄O with a mass of 32.0 g contains <u>6.02 X 10²³</u> molecules of CH₄O.

To calculate the number of moles;

Molar mass of CH₄O = C + 4(H) + O

= 12.01 + 4(1.008) + 16

= 32.04 g/mol

So, 1 mol of CH₄O = 32.04 g of CH₄O

Given, 32.0 g of CH₄O

According to Avagadro's constant 1 mole of a substance contains 6.022× 10^23 particles (molecules, atoms or ions).

= (32.0 g/1)(1 mol CH₄O/32.04 g CH₄O)(6.02x10²³/1 mol CH₄O)

= 6.02 X 10²³ molecules of CH₄O

Hence, a sample of will contain number of molecules 6.02 X 10²³ molecules.

Learn more about the Moles calculation with the help of the given link:

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