Questions: 8 AM Wed Nov 6 www-awy.aleks.com Measurement and Matter Calculating mass density A chemist working as a safety inspector finds an unmarked bottle in a lab cabinet. A note on the door of the cabinet says the cabinet is used to store bottles of acetone, methyl acetate, ethanolamine, diethylamine, and dimethyl sulfoxide. The chemist plans to try to identify the unknown liquid by measuring its density and comparing to known densities. First, from her collection of Material Safety Data Sheets (MSDS), the chemist finds the following information: liquid density --- --- acetone 0.79 g/cm^3 methyl acetate 0.93 g/cm^3 ethanolamine 1.0 g/cm^3 diethylamine 0.71 g/cm^3 dimethyl sulfoxide 1.1 g/cm^3 Next, the chemist measures the volume of the unknown liquid as 0.685 L, and the mass of the unknown liquid as 483. g. Calculate the density of the liquid. Be sure your answer has the correct number of significant digits. Given the density, is it possible to identify the liquid? O yes O no If it is possible to identify the liquid, do so. acetone methyl acetate ethanolamine diethylamine dimethyl sulfoxide

8 AM Wed Nov 6 www-awy.aleks.com Measurement and Matter Calculating mass density A chemist working as a safety inspector finds an unmarked bottle in a lab cabinet. A note on the door of the cabinet says the cabinet is used to store bottles of acetone, methyl acetate, ethanolamine, diethylamine, and dimethyl sulfoxide. The chemist plans to try to identify the unknown liquid by measuring its density and comparing to known densities. First, from her collection of Material Safety Data Sheets (MSDS), the chemist finds the following information: liquid density --- --- acetone 0.79 g/cm^3 methyl acetate 0.93 g/cm^3 ethanolamine 1.0 g/cm^3 diethylamine 0.71 g/cm^3 dimethyl sulfoxide 1.1 g/cm^3 Next, the chemist measures the volume of the unknown liquid as 0.685 L, and the mass of the unknown liquid as 483. g. Calculate the density of the liquid. Be sure your answer has the correct number of significant digits. Given the density, is it possible to identify the liquid? O yes O no If it is possible to identify the liquid, do so. acetone methyl acetate ethanolamine diethylamine dimethyl sulfoxide
Transcript text: 8 AM Wed Nov 6 www-awy.aleks.com Measurement and Matter Calculating mass density A chemist working as a safety inspector finds an unmarked bottle in a lab cabinet. A note on the door of the cabinet says the cabinet is used to store bottles of acetone, methyl acetate, ethanolamine, diethylamine, and dimethyl sulfoxide. The chemist plans to try to identify the unknown liquid by measuring its density and comparing to known densities. First, from her collection of Material Safety Data Sheets (MSDS), the chemist finds the following information: liquid | density --- | --- acetone | 0.79 $\frac{g}{cm^3}$ methyl acetate | 0.93 $\frac{g}{cm^3}$ ethanolamine | 1.0 $\frac{g}{cm^3}$ diethylamine | 0.71 $\frac{g}{cm^3}$ dimethyl sulfoxide | 1.1 $\frac{g}{cm^3}$ Next, the chemist measures the volume of the unknown liquid as 0.685 L, and the mass of the unknown liquid as 483. g. Calculate the density of the liquid. Be sure your answer has the correct number of significant digits. Given the density, is it possible to identify the liquid? O yes O no If it is possible to identify the liquid, do so. acetone methyl acetate ethanolamine diethylamine dimethyl sulfoxide Explanation Check © 2024 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center | CCPA
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Solution

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Solution Steps

Step 1: Calculate the Density of the Unknown Liquid

To calculate the density of the unknown liquid, we use the formula: $$\text{Density} = \frac{\text{Mass}}{\text{Volume}}$$ Given that the mass of the unknown liquid is 483 g and the volume is 685 cm^3, the calculated density is 0.71 g/cm^3 after rounding to 2 decimal places.

Step 2: Compare the Calculated Density with Known Densities

We compare the calculated density with the known densities of possible liquids. The calculated density closely matches the density of diethylamine, with a difference of 0 g/cm^3.

Final Answer:

The unknown liquid is likely diethylamine, based on its density.

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