2. A flask that weighs 345.8 g is filled with 225 mL of carbon tetrachloride. The weight of the flask and carbon tetrachloride is found to be 703.55 g. From this information, calculate the density of carbon tetrachloride.
Answer: A
The density of carbon tetrachloride is 1.59 g/mL.
To calculate the density of carbon tetrachloride, we first determine its mass by subtracting the weight of the empty flask from the total weight of the flask filled with carbon tetrachloride. The mass of carbon tetrachloride is 703.55 g - 345.8 g, which equals 357.75 g. The density is then calculated by dividing the mass by the volume, yielding a density of 1.59 g/mL.
A) 1.59 g/mL
This option is correct. The density of carbon tetrachloride is calculated using the formula density = mass/volume. With a mass of 357.75 g and a volume of 225 mL, the calculation results in a density of 1.59 g/mL.
B) 2.76 g/mL
This option is incorrect. A density of 2.76 g/mL would suggest a much higher mass for the same volume, which does not align with the calculated mass of 357.75 g for 225 mL.
C) 1.4 g/mL
This option is also incorrect. A density of 1.4 g/mL would imply a mass of only 315 g for 225 mL, which is lower than the calculated mass of 357.75 g, indicating inconsistency with the premise.
D) None are correct.
This option is incorrect. Since the calculated density of 1.59 g/mL is indeed correct, it contradicts the assertion that none of the options are valid.
Conclusion
The correct answer is definitively A) 1.59 g/mL, as it accurately reflects the calculations based on the provided weights and volume. All other options fail to match the calculated density, either suggesting incorrect values or failing to conform to the basic principles of density calculation.