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if 107.3 g of sodium nitride is dissolved in a 2.12 m solution, what is the volume of the solution in ml

User GulBrillo
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1 Answer

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Answer:

610. mL Na₃N

Step-by-step explanation:

To find the volume of the sodium nitride (Na₃N), you need to

(1) convert grams to moles (using the molar mass)

(2) calculate the volume in liters (using the molarity ratio)

(3) convert liters to milliliters (1,000 mL = 1 L)

It is important to arrange the conversions in a way that allows for the cancellation of units.

(Step 1)

Atomic Mass (Na): 22.990 g/mol

Atomic Mass (N): 14.007 g/mol

Molar Mass (Na₃N): 3(22.990 g/mol) + 14.007 g/mol = 82.977 g/mol

107.3 g Na₃N 1 mole
------------------------ x ------------------- = 1.29 moles NaN
82.977 g

(Step 2)

Molarity (M) = moles / volume (L)

2.12 M = 1.29 moles / ? L

(2.12 M)(? L) = 1.29 moles

? L = 0.610

(Step 3)

1,000 mL = 1 L

0.610 L Na₃N 1,000 mL
------------------------ x -------------------- = 610. mL NaN
1 L

User Vivek Mehta
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