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Oduvanchick [21]
3 years ago
12

The molar mass of monopotassium phosphate is 136.09 g/mol. How many moles of monopotassium phosphate are needed to make 250.0 ml

of 0.15 M monopotassium phosphate?
Chemistry
1 answer:
WINSTONCH [101]3 years ago
4 0

Answer:

0.0375 moles

Explanation:

Given that:

Molar mass of monopotassium phosphate = 136.09 g/mol

Given that volume = 250.0 mL

Also,

1\ mL=10^{-3}\ L

So, Volume = 250 / 1000 L = 0.25 L

Molarity = 0.15 M

Considering:

Molarity=\frac{Moles\ of\ solute}{Volume\ of\ the\ solution}

0.15=\frac{Moles\ of\ solute}{0.25}

<u>Thus, moles of monopotassium phosphate needed = 0.0375 moles</u>

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