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What is the mass associated with #"20 million water molecules?"#

Answer 1

Mateo Aguilar

Well #"Avogadro's number"# of water molecules has a mass of #18.01*g#.......

And #"Avogadro's number"-=6.022xx10^23*mol^-1#

And thus the mass of #20xx10^6*"water molecules"#

#-=(20xx10^6*"water molecules"xx18.01*g*mol^-1)/(6.022xx10^23*"water molecules"*mol^-1)#

#=6xx10^-16*g#.........or #1/8xx1/5xx1/32*"sweet F....... A..."#

Furthermore, no balance could quantify this.

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Answer 2

Serenity Allen

Three and a half grams is the mass of twenty million water molecules.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.