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Natasha_Volkova [10]
2 years ago
11

PLEASE HELP!! 50 POINTS FOR ONE MULTIPLE CHOICE QUESTION!!!!!!!!!!!!!!!

Chemistry
2 answers:
Paul [167]2 years ago
8 0

Answer:

it is B

Explanation:

Vlad1618 [11]2 years ago
6 0

Answer:

[B] 8 moles.

Explanation:

Chemical equation: N2 + H2 = NH3

  • N2 + 3H2 = 2NH3 (balanced)
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First, calculate for the mass of the aqueous solution by multiplying the given volume (in mL) by the density (in g/mL). In mathematical equation, that is,

        m = ρV

where m is mass, ρ is density, and V is volume. Substituting the known values,

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To get the concentration in ppm, divide the given mass of methanol by the mass of the solution. Note that the parts-per million (ppm) is equal to mass of solute in milligram(mg) divided by the mass of solution in kilogram (kg)

      C (in ppm) = (1.56 x 10^-6 g)(1000 mg/1 g)   / (257.5 g)(1 kg/1000 g)

Simplifying,
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<em>Answer: 0.00606 ppm</em>
     
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