complete the following addition using significant figures. 5.55555×10^5 μg + 5.55×10^5 μg = \nwhat is the…

complete the following addition using significant figures. 5.55555×10^5 μg + 5.55×10^5 μg = \nwhat is the uncertainty in the final answer? (select two different answers __1__ and __2__ in the order given in the answers)\na. +/- 0.00001×10^5 μg\nb. +/- 0.01 μg\nc. +/- 0.01×10^5 μg\nd. +/- 1×10^3 μg

complete the following addition using significant figures. 5.55555×10^5 μg + 5.55×10^5 μg = \nwhat is the uncertainty in the final answer? (select two different answers __1__ and __2__ in the order given in the answers)\na. +/- 0.00001×10^5 μg\nb. +/- 0.01 μg\nc. +/- 0.01×10^5 μg\nd. +/- 1×10^3 μg

Answer

Explanation:

Step1: Perform the addition

[5.55555\times 10^{5}\ \mu g+5.55\times 10^{5}\ \mu g=(5.55555 + 5.55)\times 10^{5}\ \mu g=11.10555\times 10^{5}\ \mu g]

Step2: Round to significant - figures

The number (5.55\times 10^{5}) has three significant figures. Rounding (11.10555\times 10^{5}) to three significant figures gives (11.1\times 10^{5}\ \mu g = 1.11\times 10^{6}\ \mu g). The uncertainty is determined by the least - precise measurement. The least - precise measurement is (5.55\times 10^{5}\ \mu g), and the uncertainty in (5.55\times 10^{5}\ \mu g) is (\pm0.01\times 10^{5}\ \mu g) or (\pm 1\times 10^{3}\ \mu g)

Answer:

C. (\pm0.01\times 10^{5}\ \mu g) D. (\pm1\times 10^{3}\ \mu g)