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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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The complete question would be as follows:

700,000 tons of baking soda are produced per year. <span>How many kilograms of carbon dioxide are used per year to produce baking soda?

We calculate as follows:

</span><span>CO2(g) + NH3(aq) + NaCl(aq) + H2O -----> NaHCO3(s) + NH4Cl(aq)
</span>
700000 tons NaHCO3 ( 907.185 kg / 1 ton ) (<span>1 kmole NaHCO3 / 84.0 kg NaHCO3) x (1 kmole CO2 / 1 kmole NaHCO3) x (44.0 kg CO2 / 1 kmole) = 3x10^8 kg CO2

Hope this answers the question. Have a nice day.</span>
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What is The substance that could not be dissolved and has settled out of a solution
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Which statement best describes the effect of radioactive decay on a nucleus?
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Determine the amount in grams of KCl that exists in 20.3 g of a solution that contains 1.14 % KCl by mass 1.14 g KCl
Fiesta28 [93]

The mass of KCl that exists in 20.3 g of solution containing 1.14% by mass of KCl is 0.23 g

From the question given above, the following data were obtained:

Mass of solution = 20.3 g

Percentage of KCl = 1.14% = 1.14 / 100 = 0.0114

<h3>Mass of KCl =?</h3>

Percentage = \frac{mass of solute}{mass of solution}   * 100\\\\0.0114 = \frac{mass of KCl}{20.3} \\\\

Cross multiply

Mass of KCl = 0.0114 × 20.3

<h3>Mass of KCl = 0.23 g</h3>

Therefore, the mass of KCl in the solution is 0.23 g

Learn more: brainly.com/question/14876861

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