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A chemist prepares a solution of calcium bromide (CaBr, ) by measuring out 30.2 umol of calcium bromide into a 300. mL volumetric flask and filling the flask to the mark with water. Calculate the concentration in mmol/L of the chemist's calcium bromide solution. Round your answer to 3 significant digits.

A chemist prepares a solution of calcium bromide (CaBr, ) by measuring out 30.2 umol of calcium bromide into a 300. mL volumetric flask and filling the flask to the mark with water. Calculate the concentration in mmol/L of the chemist's calcium bromide solution. Round your answer to 3 significant digits.

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ISBN:9781305957404
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A chemist prepares a solution of calcium bromide(CaBr2) by measuring our 30.2 umol of calcium bromide into a 300.mL volumetric flask and filling the flask to the mark with water. Calculate the concentration in mol/ L of the chemist's calcium bromide solution. Round your answer to 3 significant digits.

**Title: Calculating the Concentration of a Calcium Bromide Solution** *A chemist prepares a solution of calcium bromide (CaBr₂) by measuring out 30.2 µmol of calcium bromide into a 300. mL volumetric flask and filling the flask to the mark with water.* *Calculate the concentration in mmol/L of the chemist's calcium bromide solution. Round your answer to 3 significant digits.* **Calculation Steps:** 1. Convert the measured amount of calcium bromide from µmol to mmol. - 1 µmol = 0.001 mmol - Therefore, 30.2 µmol = 30.2 x 0.001 mmol = 0.0302 mmol 2. Convert the volume of the solution from mL to L. - 1 mL = 0.001 L - Therefore, 300 mL = 300 x 0.001 L = 0.300 L 3. Calculate the concentration in mmol/L. - Concentration (in mmol/L) = Amount of substance (in mmol) / Volume of solution (in L) - Concentration = 0.0302 mmol / 0.300 L = 0.10067 mmol/L 4. Round the answer to 3 significant digits: - 0.10067 mmol/L rounds to 0.101 mmol/L **Concentration of the solution: 0.101 mmol/L** **Explanation:** - **Unit Conversion:** The key to solving this problem effectively lies in converting units correctly between µmol, mmol, and mL, L. - **Concentration Calculation:** This involves dividing the amount of substance by the volume of the solution to find the concentration. **Input Box Figure:** - The figure displays an input box asking for the concentration in mmol/L. - There is also a calculator icon, a graph icon, and an array icon on the right-hand side for further interactive functionality.
Transcribed Image Text:**Title: Calculating the Concentration of a Calcium Bromide Solution** *A chemist prepares a solution of calcium bromide (CaBr₂) by measuring out 30.2 µmol of calcium bromide into a 300. mL volumetric flask and filling the flask to the mark with water.* *Calculate the concentration in mmol/L of the chemist's calcium bromide solution. Round your answer to 3 significant digits.* **Calculation Steps:** 1. Convert the measured amount of calcium bromide from µmol to mmol. - 1 µmol = 0.001 mmol - Therefore, 30.2 µmol = 30.2 x 0.001 mmol = 0.0302 mmol 2. Convert the volume of the solution from mL to L. - 1 mL = 0.001 L - Therefore, 300 mL = 300 x 0.001 L = 0.300 L 3. Calculate the concentration in mmol/L. - Concentration (in mmol/L) = Amount of substance (in mmol) / Volume of solution (in L) - Concentration = 0.0302 mmol / 0.300 L = 0.10067 mmol/L 4. Round the answer to 3 significant digits: - 0.10067 mmol/L rounds to 0.101 mmol/L **Concentration of the solution: 0.101 mmol/L** **Explanation:** - **Unit Conversion:** The key to solving this problem effectively lies in converting units correctly between µmol, mmol, and mL, L. - **Concentration Calculation:** This involves dividing the amount of substance by the volume of the solution to find the concentration. **Input Box Figure:** - The figure displays an input box asking for the concentration in mmol/L. - There is also a calculator icon, a graph icon, and an array icon on the right-hand side for further interactive functionality.
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