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Effect on Indicators by Acids and Bases

How many mole...

Question

How many moles are in 25 grams of water?

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Solution

Answer
1.389 mol
Explanation:
Moles = Mass divided by molar mass, where molar mass of $H_{2} O$ 1+1+16=18g/mol.
$n = \frac{m}{M r}$
$= \frac{25}{18}$
$= 1.389 m o l$

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