Question

How many aluminum atoms are in 2.56 g of aluminum?

Express your answer to three significant figures.

Answer 1

• 6.02×1023

Step-by-step explanation:

One mole of aluminum atoms has a mass of 26.98 grams, and contains 6.02×1023 atoms. Dividing 26.986.02×1023 yields a mass of 4.48×10−23 g for one aluminum atom.