Answer to Question #139512 in General Chemistry for sham

Question

1. How many significant figures are there in each of the following numbers?

(a) 0.012 (b) 0.10203 (c) 36.042

(d) 8401.0 (e) 32100 (f) 0.0402

2. Round off to two significant figures:

(a) 91.621 (b) 7.329 (c) 0.677

(d) 0.003249 (e) 5.88 (f) 0.3524

Answer 1

1(a) 0.012 has 2 significant figures 1and 2

(b)0.10203 has 5 significant figures 1,0,2,0 and 3

(C)36.042 has 5 significant figures 3,6,0,4 and 2

(d)8401.0 has 5 significant figures 8,4,0,1 and 5

(e)32100 has 3 significant figures 3,2,1,0 and 0

(d)0.0402 has 3 significant figures 4,0 and 2

2. (a) 91.621 into 2s.f = 92.000

(b)7.329 = 7.300

(C)0.677 = 6.80

(d) 0.003249= 32.00

(e) 0.3524= 35.00