Solve the following question: Round off the following quantity to three significant figures: 42,150 - Chemistry

Solve the following question:

Round off the following quantity to three significant figures:

42,150

Numerical

4.22 × 10⁴ (or 42,200)

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Mathematical Operation and Error Analysis

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

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

Choose the correct option:

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

What do you mean by significant figures?

State the rules for deciding significant figures.

Why is accurate measurement crucial in science?

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 two significant figures:

199 g

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:

458 × 10² cm

Solve the following question:

Round off the following quantity to three significant figures:

0.039 m

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:

649.85