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If 15 grams of sugar is dissolved in 250 mL of water, what is the molarity of th
If 15 grams of sugar is dissolved in 250 mL of water, what is the molarity of the solution? (Molar mass of sugar = 180 g/mol)
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Practice Questions
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Q1
If 15 grams of sugar is dissolved in 250 mL of water, what is the molarity of the solution? (Molar mass of sugar = 180 g/mol)
0.33 M
0.5 M
0.25 M
0.75 M
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Moles of sugar = 15 g / 180 g/mol = 0.0833 moles. Molarity = 0.0833 moles / 0.25 L = 0.333 M.
Questions & Step-by-step Solutions
1 item
Q
Q: If 15 grams of sugar is dissolved in 250 mL of water, what is the molarity of the solution? (Molar mass of sugar = 180 g/mol)
Solution:
Moles of sugar = 15 g / 180 g/mol = 0.0833 moles. Molarity = 0.0833 moles / 0.25 L = 0.333 M.
Steps: 6
Show Steps
Step 1: Find the number of moles of sugar. Use the formula: Moles = Mass (g) / Molar mass (g/mol). Here, Mass = 15 grams and Molar mass = 180 g/mol.
Step 2: Calculate the moles of sugar: 15 g / 180 g/mol = 0.0833 moles.
Step 3: Convert the volume of water from mL to L. Since 1 L = 1000 mL, 250 mL = 0.25 L.
Step 4: Calculate the molarity of the solution using the formula: Molarity (M) = Moles of solute / Volume of solution (L).
Step 5: Substitute the values: Molarity = 0.0833 moles / 0.25 L.
Step 6: Calculate the molarity: 0.0833 moles / 0.25 L = 0.333 M.
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