Answer:
I. 4.8; 40
II. 0.12
Explanation:
Given the following numerical values;
a. 4.793 (it is correct to 4 significant figures).
To 3 significant figures, we have;
4.793 = 4.79
To 2 significant figures, we have;
4.793 = 4.8
b. 39.51 (it is correct to 4 significant figures).
To 3 significant figures, we have;
39.51 = 39.5
To 2 significant figures, we have;
39.51 = 40
II. To estimate
;
;

(simplify the equation)

(subrtact both sides by 14)


(multiply both sides by 6)

Hope it helped,
Happy homework/ study/ exam!
Answer:
Label A is Carbon Dioxide and Label B is Oxygen
Explanation:
We can use rivers to get fresh water