Which has more molecules, a teaspoon of water that has a mass of 1.25 grams or a teaspoon of alcohol, C2H5OH, that has a mass of 0.890 grams?

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To know which compound has more in terms of content, we can simply convert them to molecules using Avogadro's number. 

Molecules of water

`1.25 grams water *(1 mol e water)/(18.0 grams water) * (6.022x10^23 mol e c u l es water)/(1 mol e water)`

= 4.18x10^23 molecules of water

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To know which compound has more in terms of content, we can simply convert them to molecules using Avogadro's number. 

Molecules of water

`1.25 grams water *(1 mol e water)/(18.0 grams water) * (6.022x10^23 mol e c u l es water)/(1 mol e water)`

= 4.18x10^23 molecules of water

 

Molecules of ethanol, C2H5OH

`0.890 grams ethanol * (1 mol e ethanol)/(46.0 grams) * (6.022x10^23 mol e c u l e s of ethanol)/(1 mol e ethanol)`

= 1.17x10^22 molecules of ethanol

 

Looking at the results we can say that there are mole water molecules than ethanol molecules. 

 

**ethanol is an alcohol

 

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