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The solubility of calcium carbonate is [tex]$14 \frac{\text{milligrams}}{\text{Liter}}$[/tex]. This rate means that 14 milligrams of calcium carbonate can dissolve in 1 liter of water.

How much water would be required to fully dissolve 11 grams of calcium carbonate? Express your answer to the correct number of significant figures. One milligram is equal to 0.001 grams.

It would take [tex]$\square$[/tex] liters of water to fully dissolve 11 grams of calcium carbonate.


Sagot :

To determine how much water would be required to fully dissolve 11 grams of calcium carbonate given that the solubility is [tex]\(14 \frac{\text{milligrams}}{\text{liter}}\)[/tex], we follow these steps:

1. Convert grams to milligrams:
Since 1 gram is equal to 1000 milligrams, we need to convert 11 grams of calcium carbonate to milligrams:

[tex]\[ 11 \text{ grams} = 11 \times 1000 \text{ milligrams} = 11,000 \text{ milligrams} \][/tex]

2. Determine the amount of water required:
Knowing that the solubility is [tex]\(14 \text{ milligrams per liter}\)[/tex], we can set up the ratio:

[tex]\[ \text{Amount of water required in liters} = \frac{\text{Amount of calcium carbonate in milligrams}}{\text{Solubility in milligrams per liter}} \][/tex]

Substituting in the given values:

[tex]\[ \text{Amount of water required} = \frac{11,000 \text{ milligrams}}{14 \text{ milligrams per liter}} \][/tex]

3. Calculate the answer:

[tex]\[ \text{Amount of water required} = 785.7142857142857 \text{ liters} \][/tex]

4. Express the answer with the correct number of significant figures:
The solubility and the amount of calcium carbonate given have 2 significant figures, so we should express our answer to 2 significant figures as well:

[tex]\[ \text{Amount of water required} \approx 790 \text{ liters} \][/tex]

Therefore, it would take [tex]\(790\)[/tex] liters of water to fully dissolve [tex]\(11\)[/tex] grams of calcium carbonate.