Question

Find The Number of Molecules present in 0.036 gm of Water (H2O)

Answer 1

Answer:

Explanation:

To go from the mass of water to molecules of water, we have to do two things:

Convert mass of H2O to moles of H2O using the molar mass of H2O as a conversion factor

Convert moles of H2O to molecules of H2O using Avogadro's number (6.02×1023) as a conversion factor

Step 1:

Before we start, I should note that the molar mass of H2O is 18.01gmol.

We can go from mass to moles using dimensional analysis. The key to dimensional analysis is understanding that the units that you don't need any more cancel out, leaving the units that are desired:

36g×1mol18.01g =2.00mol

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Answer 2

Answer:

the answer is attached below....