A strand of hair has an average mass of 2.17×10−5 ounces. A grain of rice has an average mass of 0.002 ounces. How much heavier is a grain of rice than a strand of hair? Express your answer in scientific notation.(1 point)

Answer 1

To find the difference in weight between a grain of rice and a strand of hair, we subtract the weight of the strand of hair from the weight of the grain of rice.

Weight of a grain of rice = 0.002 ounces
Weight of a strand of hair = 2.17 x 10^(-5) ounces

Difference = 0.002 - 2.17 x 10^(-5) = 0.00199783 ounces

Expressing the answer in scientific notation, we get 1.99783 x 10^(-3) ounces.