Question

In the addition of three masses 1.4 g, 4.24 g and
7.432 g has x significant figures. The value of IS
(1) 2
(2) 3
(3) 4
(4) 5
please answer this with explanation i will mark you as brainliest ​

Answer 1

Dear Student,

◆ Answer -

(2) 3

● Explaination -

# Given -

m1 = 1.4 g (2 significant figures)

m2 = 4.24 g (3 significant figures)

m3 = 7.432 g (4 significant figures)

# Solution -

Addition of three masses is calculated by -

M = m1 + m2 + m3

M = 1.4 + 4.24 + 7.432

M = 13.072 g

As a rule, answer can't be more accurate than least precise measurement.

M ~ 13.1 g

Here, no of significant figures is 3.

Thanks dear. Hope this helps you...