Question

complete the following subtraction using significant figures.
5.55555 x 10^5 μg - 5.55 x 10^5 μg =
what is the mathematical answer before putting into scientific notation and before rounding using significant figures?
5.55555 x 10^5 μg

• 5.55 x 10^5 μg

0.01 x 10^5 μg
0.0056 x 10^5 μg
0.0055 x 10^5 μg
0.00555 x 10^5 μg

Explanation:

Step1: Subtract the coefficients

Since the exponents of 10 are the same ($10^{5}$), we subtract the coefficients: $5.55555 - 5.55= 0.00555$.

Step2: Multiply by the common power of 10

The result is $0.00555\times 10^{5}\ \mu g$.

Answer:

D. $0.00555\times 10^{5}\ \mu g$