wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

18.72 g of a substance 'X' occupies 1.81 cm3. What will be its density measured in correct significant figures?

A
10.3 g cm3
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
B
10.34 g cm3
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
10.4 g cm3
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
10.3425 g cm3
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is A 10.3 g cm3
Density is mass per unit volume of the substance

Density, ρ=mass (m)Volume (V)

Given :m=18.72 g and V=1.81 cm3

on substituting we get:

ρ=18.721.81=10.3425

Rule: Answer to a multiplication or division should be rounded off to the same number of significant figures as possessed by the least precise term in the calculation.
least precise is 1.81 with 3 significant figures thus, the answer will also posses 3 significant figures as 10.3 g cm3

Hence, the correct option is A

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Measurement of Significant Figures
CHEMISTRY
Watch in App
Join BYJU'S Learning Program
CrossIcon