Solve the following question: Round off the following quantity to three significant figures: 23,642,000 mm

Solve the following question:

Round off the following quantity to three significant figures:

23,642,000 mm

Numerical

2.36 × 10⁷ mm

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

Chapter 2 Introduction to Analytical Chemistry
Exercises | Q 3. (C)(j) | 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:

0.039 m

Solve the following question:

Round off the following quantity to three significant figures:

6.398 × 10^-3 km

Solve the following question:

Round off the following quantity to three significant figures:

42,150

Solve the following question:

Round off the following quantity to three significant figures:

649.85

Solve the following question:

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

319.5 g − 20460 g − 0.0639 g − 45.642 g − 4.173 g