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Lilit [14]
4 years ago
12

A chemist prepares a solution of sodium nitrate by measuring out of sodium nitrate into a volumetric flask and filling the flask

to the mark with water.
Calculate the concentration in mol/L of the chemist's sodium nitrate solution. Round your answer to 3 significant digits.
Chemistry
1 answer:
BARSIC [14]4 years ago
8 0

Answer:

<u><em>5.74M or 5.74 mol/L (to 3 sign. fig.)</em></u>

Explanation:

The molar mass of NaNO3 is 85g/mol, which means that:

1 mole of NaNO3 - 85g

? moles - 122.0g

= 122/85 = 1.44 moles

Concentration in mol/L = no. of moles (moles) ÷ volume (L)

\frac{1.44}{0.250} =<em> 5.74M or 5.74 mol/L (to 3 sign. fig.)</em>

<em></em>

<em>I hope the steps are clear and easy to follow.</em>

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Answer:

8.13 ×10²³ atoms

Explanation:

Given data:

Mass of magnesium = 32.45 g

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Solution:

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Number of moles = 1.35 mol

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