Question

Aubrey broke a cell sample into 15 batches, each way 1.3×10 to the -7th grams. How much did the original sample weigh? Use scientific notation to express your answer.

Answer 1

Explanation:

1.3 * 10 ^-7

is 0.00000013

0.00000013 times 15 is

0.00000195.

0.00000195 in scientific notation is

1.95*10^-6