Question

There are 3.76 × 10^22 atoms in 1 gram of oxygen. How many atoms are there in 700 grams of oxygen? Write your answer in scientific notation. If necessary, round your answer to two decimal places.

Answer 1

2.632 x 10^25 atoms of oxygen [or 26.32 x 10^24]

Explanation:

(3.76 × 10^22 atoms/gram)*(700 g) = (3.76 × 10^22)*(7.00x10^2)

(3.76 × 10^22)*(7.00x10^2) = (3.76*7.00)*(10^22)(10^2)

26.32 x 10^24

2.632 x 10^25 atoms of oxygen in 700 grams of oxygen.