What is Avogadro's constant in scientific notation?

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Study for the IMAT Chemistry Exam. Access flashcards and multiple choice questions; hints and explanations included for each question. Prepare effectively for your exam.

Multiple Choice

What is Avogadro's constant in scientific notation?

Explanation:
The main idea here is how many particles are in one mole. Avogadro's constant gives the number of elementary entities in a mole of any substance, and its value in scientific notation is 6.022 × 10^23 particles per mole (units are mol^-1). This means that one mole of carbon-12, or any substance, contains 6.022 × 10^23 atoms or molecules, respectively. We use this constant to convert between moles and the actual number of particles with the relation N = n × N_A. The other numbers in the options differ by powers of ten, which would imply vastly different counts of particles per mole, so 6.022 × 10^23 is the correct representation.

The main idea here is how many particles are in one mole. Avogadro's constant gives the number of elementary entities in a mole of any substance, and its value in scientific notation is 6.022 × 10^23 particles per mole (units are mol^-1). This means that one mole of carbon-12, or any substance, contains 6.022 × 10^23 atoms or molecules, respectively. We use this constant to convert between moles and the actual number of particles with the relation N = n × N_A. The other numbers in the options differ by powers of ten, which would imply vastly different counts of particles per mole, so 6.022 × 10^23 is the correct representation.

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