Question

How many moles of water, H2O, contain 2.0×1022 molecules of water

Answer 1

Answer:

The answer is 0.03 moles

Explanation:

To find the number of moles given the number of entities we use the formula

$n = \frac{N}{L}$

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question

N = 2 × 10²² molecules of water

We have

$n = \frac{2 \times {10}^{22} }{6.02 \times {10}^{23} } \\ = 0.033222591...$

We have the final answer as

0.03 moles

Hope this helps you