Solve the following question: Round off the following quantity to two significant figures: 0.00254 m - Chemistry

Solve the following question:

Round off the following quantity to two significant figures:

0.00254 m

संख्यात्मक

0.0025 m

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पाठ 2: Introduction to Analytical Chemistry - Exercises [पृष्ठ २४]

पाठ 2 Introduction to Analytical Chemistry
Exercises | Q 3. (B)(b) | पृष्ठ २४

What do you mean by significant figures?

State the rules for deciding significant figures.

Distinguish between accuracy and precision.

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:

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:

79,000 m

Solve the following question:

Round off the following quantity to three significant figures:

0.0041962 kg

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