Question

k. 0.0041962 kg
D. Express the following sum to appropriate
number of significant figures :
a. 2.3 x 10 mL + 4.22 x 10 mL +9.04 x
10 ml +8.71 10% mL.
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Answer 1

Answer:

4.2×10raised to-3

Explanation:

first shift digit into one point of number in 1 to 9 . example. 4.19

if third digit is more than 5 that second digit will add one . example 4.2

now count how many you shift that number that point will put. example. 10raised to -3

answer is 4.2×10raised to -3