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    How many molecules are in a drop of water?

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    How many molecules are contained in one drop (0.050 mL) of water (density 1.0 g/mL)?

    © BrainMass Inc. brainmass.com February 24, 2021, 2:15 pm ad1c9bdddf

    Solution Preview

    To answer this question one must first start with the concept of a mole.

    The mole is a number 6.022 x10^23 that can represent anything. This number is known as Avogadro's number. One would like to own a mole of pennies for instance.

    The mole is only convenient when speaking ...

    Solution Summary

    How many water molecules are there in a drop? This is a concept that is poorly understood, difficult to visualize, but relatively easy to calculate.