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Ch.2 - Atoms & Elements
Chapter 2, Problem 110

The mass of an average blueberry is 0.75 g and the mass of an automobile is 2.0×103 kg. Find the number of automobiles whose total mass is the same as 1.0 mol of blueberries.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Molar Mass

Molar mass is the mass of one mole of a substance, typically expressed in grams per mole (g/mol). For blueberries, the average mass is 0.75 g, which means that one mole of blueberries would weigh 0.75 g multiplied by Avogadro's number (approximately 6.022 x 10^23), allowing us to calculate the total mass of 1.0 mol of blueberries.
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Unit Conversion

Unit conversion is the process of converting a quantity expressed in one set of units to another. In this problem, we need to convert the mass of the automobile from kilograms to grams (1 kg = 1000 g) to facilitate a direct comparison with the mass of blueberries, ensuring that both quantities are expressed in the same unit.
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Ratio and Proportion

Ratio and proportion involve comparing two quantities to determine how many times one quantity contains another. In this context, once we have the total mass of 1.0 mol of blueberries and the mass of a single automobile, we can set up a ratio to find out how many automobiles would equal the total mass of the blueberries, allowing us to solve the problem effectively.
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