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matrenka [14]
2 years ago
7

What are the molecular mass of the starting substance of 2NaCl + 2H2O → 2NaOH + Cl2 + H2

Chemistry
1 answer:
kaheart [24]2 years ago
3 0

Using the periodic table, what are the molecular masses of the starting and ending substances?

NaCl =

g/mole

Cl2 =

g/mole

58.44

70.90

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What is the molar mass of a gas which has a density of 0.00249 g/mL at 20.0 degrees celcius and 744.0 mm Hg?
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61.24 is the molar mass of a gas which has a density of 0.00249 g/mL at 20.0 degrees celcius and 744.0 mm Hg.

Explanation:

given that:

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Formula used/

PV = nRT    equation 1

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putting the value of n and value of density in the equation 1:

PV = \frac{mass}{molar mass} x RT

molar mass = \frac{mass}{volume} x \frac{RT}{P}

                    = density x \frac{RT}{P}

                     = \frac{2.49 x 0.08276 x 293.15}{0.978}

                     = 61.24 is the molar mass of the gas.

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