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Some Basic Concepts Of Chemistry

Question

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State the number of significant figures in each of the following numbers:
2·653 × 10⁴

Solution

2·653×10⁴ has four significant figures because in exponential notation, the numerical portion gives the number of significant figures.

Some More Questions From Some Basic Concepts of Chemistry Chapter

What is the relation between temperature in Kelvin (K) and temperature on centigrade scale?

The popular unit of pressure is atmosphere, how is it related to pascal?

What are SI units of the following:

(i) Density
(ii) Molarity
(iii) Energy
(iv) Temperature ?

Out of 5.00 g and 5.0 g which one is more accurate and why?

What is iodised table salt?

Under what conditions air is considered as a heterogenous mixture?

What is gun powder?

Name two elements which are liquids.

Name two elements which are gases.

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