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3 years ago

How many grams of solute are needed to make 125 mL of 2.50 M NH4Cl solution? Round to three significant digits.

Chemistry

1 answer:

Nookie1986 [14]3 years ago

4 0

Answer:

Mass = 16.7 g

Explanation:

Given data:

Volume = 125 mL (125/1000 =0.125 L)

Molarity = 2.50 M

Mass in grams of solute = ?

Solution:

First of all we will calculate the number of moles:

<em>Molarity = number of moles solute / volume in litter</em>

2.50 M = Number of moles of solute/ 0.125 L

Number of moles of solute = 2.50 M × 0.125 L

Number of moles of solute = 0.313 mol

Grams of solute:

<em>Number of moles = mass / molar mass</em>

Mass = number of moles × molar mass

Mass = 0.313 mol × 53.5 g/mol

Mass = 16.7 g

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joja [24]

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Explanation:

Hello,

In this case, one could represent the given reaction as:

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