Convert Molecules to Moles

To convert 0.77 x 10^24 molecules (of any compound) to moles, we use Avogadro's number, which is approximately 6.022 x 10^23 molecules per mole.

Step 1: Determine the conversion factor
1 mole = 6.022 x 10^23 molecules

Step 2: Set up the conversion
0.77 x 10^24 molecules * (1 mole / 6.022 x 10^23 molecules)

Step 3: Calculate the result
0.77 x 10^24 / 6.022 x 10^23 = 1.28 moles

Step 4: Determine the correct significant figures
The original number, 0.77 x 10^24, has two significant figures, so the final answer should also have two significant figures. Therefore, the result is approximately 1.3 moles (rounded to two significant figures) of the compound.

For more practice and a better understanding of moles, grams, and other related concepts, you can check out the following resources:

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[sladewilson]

Why dont round around 1.3 since 0.77 got two significant figures?