Answer:
b
Explanation:
[H3O+] = 10-pH = 10-3.4 ≅ 3.981 x 10^-4 moles/liter
Can u send a picture so I know wat ur talking about
Answer: The relative error of the resulting quantity is 0.018.
Explanation: Relative error of the quantities when are multiplied together is usually less than or equal to the sum of each relative error. Mathematically, it is represented as

According to the question,
Let us assume that the three quantities are 

Taking log on both the sides, we get


Relative error is calculated by:


This value has 3 significant figures only, so the resulting relative error is 0.018.
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Answer:
3 and 1
Explanation:
All others are a physical change