Question

Which of the following measurement is most accurate and why?
a) 20.0g
b) 0.0002g
c)2.0g

Answer 1

0.0002 g is least accurate as  it can be 0.0002 or 0.0003  -  50% error

20.0 g- accuracy is  -  0.5 % error        MOST accurate

2.0 g is   5% error