Which of the following is equal to exactly Avogadro's number of atoms?
A) 8.00 grams of oxygen
B) 35.38 grams of zinc
C) 12.01 grams of carbon
D) 11.99 grams of sodium
E) 34.00 grams of selenium

Question

Quizplus · Accepted Answer

Avogadro's number is defined as the number of atoms in 12 grams of carbon-12, which is approximately 6.022 x 10^23 atoms/mol. Therefore, 12.01 grams of carbon contains exactly Avogadro's number of atoms, since it is one mole of carbon.

Which of the Following Is Equal to Exactly Avogadro's Number