Question

How many molecules does 88 grams CO2 contain? A) 1.2 X 1024 B) 1.8 X 1024 C) 3.0 X 1023 D) 6.0 X 1023

Answer 1

Hey there!:

Molar mass CO2 = 44.01 g/mol

44.01 g CO2 ------------------- 6.02*10²² molecules CO2

88 g CO2 ------------------------ y

y = 88 * ( 6.02*10²² ) / 44.01

y = 5.29*10²⁵ / 44.01

y = 1.2 * 10²⁴ molecules of CO2

Answer A

Hope that helps!

Answer 2

The number of molecules, 88 grams of $CO_2$ contain is 1.2 × 1024.

The correct option is (A) 1.2 × 1024.

Calculating the number of molecules

Given, the number of molecules of $CO_2$ = 88 grams.

To calculate the number of molecule, first we calculate the numbers of moles of $CO_2$.

Mass = 88 grams and  molecular mass = 44

The number of moles = mass divided by molecular mass

Thus,

$\dfrac{88}{44} = 2\ moles$

The  Number of moles = 2 moles.

Then one mole is equal to 6.022 × 1023

So two moles = $6.0 \times 1023 \times 6.0 \times 1023 = 1.2 \times 1024$

Thus, the correct option (A) 1.2 × 1024

Learn about carbon, here:

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