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Some Basic Concepts Of Chemistry

Question

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Convert the following into basic units:
28.7 pm

Solution

28.7 space pm space equals space 28.7 space pm space cross times space fraction numerator 10 to the power of negative 12 end exponent straight m over denominator 1 space pm end fraction space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space equals space 2.87 space cross times space 10 to the power of negative 11 end exponent space straight m

Some More Questions From Some Basic Concepts of Chemistry Chapter

Express the Avogadro's number (6·023×10²³) upto three significant figures.

What is the result of (5.472 - 1.12) to the appropriate number of signficant figures?

Express 0.0468 in scientific notation.

What does SI units stand for?

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?

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