Answer :
Final answer:
The mass of the oil is calculated by multiplying the density (0.843 g/mL) by the volume (25.0 mL), yielding a result of 21.1 g.
Explanation:
The mass of a substance can be calculated by the formula: Density = Mass/Volume. Given that the density of the oil is 0.843 g/mL and the volume is 25.0 mL, one can rearrange the formula to find the mass: Mass = Density * Volume. Thus, the mass of the oil would be: 0.843 g/mL * 25.0 mL = 21.1 g. Therefore, option a. 21.1 g is the correct answer.
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