Question

5.55555 x 10^5 μg
+ 5.55 x 10^5 μg red gives the greatest uncertainty
11.10555 x 10^5 μg this is 4 significant figures
1.111 x 10^6 μg. final answer
this helps you to understand? (true/false)
true
false

Explanation:

Step1: Add the two values

\[5.55555\times 10^{5}\text{ }\mu\text{g}+5.55\times 10^{5}\text{ }\mu\text{g}=(5.55555 + 5.55)\times10^{5}\text{ }\mu\text{g}=11.10555\times 10^{5}\text{ }\mu\text{g}\]

Step2: Convert to scientific - notation with correct significant figures

When adding, we consider the decimal - place of the number with the least precision. 5.55 has two decimal places. Rounding 11.10555×10⁵ to the correct precision gives \(1.111\times 10^{6}\text{ }\mu\text{g}\). But the question is asking if the provided explanation helps to understand, which is subjective. However, assuming a normal educational context, if the steps are clear to the learner, it can be considered helpful.

Answer:

True