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svetoff [14.1K]
3 years ago
9

A 5.345g sample of NaHCO3 is dissolved in enough water to make 300.0ml of solution. What is the molarity

Chemistry
1 answer:
Lelechka [254]3 years ago
5 0

Answer: 0.208 M

Explanation:

Convert NaHCO3 to moles.

\frac{5.2345 g}{1} * \frac{1 mol}{84.01 g} = 0.0623 mol

Molarity is moles over liters.

M = \frac{0.0623 mol}{0.3000 L} = 0.208 M

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carbon dioxide at 25 degrees celsius and 101.3 kpa has a density of 1.799 kg/m^3 determine gas constant
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Explanation:

Temperature of gas in absolute scale T = 25 + 273 = 298 .

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From gas formula

PV / T = n R Where P is pressure , V is volume and T is absolute temperature , n is no of moles

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P / T = m R /M V where m is mass of gas and M is molecular weight .

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