Solve the following question: Round off the following quantity to three significant figures: 0.0041962 kg - Chemistry

Solve the following question:

Round off the following quantity to three significant figures:

0.0041962 kg

Numerical

0.00420 kg (or 4.20 × 10^-3 kg)

shaalaa.com

Mathematical Operation and Error Analysis

Is there an error in this question or solution?

Chapter 2: Introduction to Analytical Chemistry - Exercises [Page 24]

Chapter 2 Introduction to Analytical Chemistry
Exercises | Q 3. (C)(k) | Page 24

Choose the correct option:

In Avogadro’s constant 6.022 × 10²³ mol^-1, the number of significant figures is ________

State the rules for deciding significant figures.

Distinguish between accuracy and precision.

Why there is a need of rounding off figures during calculation?

Solve the following question:

Round off the following quantity to two significant figures:

25.55 mL

Solve the following question:

Round off the following quantity to two significant figures:

0.00254 m

Solve the following question:

Round off the following quantity to three significant figures:

1.43 cm³

Solve the following question:

Round off the following quantity to three significant figures:

0.0179 g

Solve the following question:

Round off the following quantity to three significant figures:

79,000 m

Solve the following question:

Round off the following quantity to three significant figures:

23,642,000 mm

Express the following sum to the appropriate number of significant figures:

2.3 × 10³ mL + 4.22 × 10⁴mL + 9.04 × 10³ mL + 8.71 × 10⁵ mL