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Some Basic Concepts Of Chemistry

Question

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Express each of the following in SI units:
0·74 Å (the bond length of hydrogen molecule).

Solution

0.74 space straight Å colon 1 space straight Å space equals space 10 to the power of negative 10 end exponent straight m therefore space space space 0.74 straight Å space equals space 0.74 space cross times space 10 to the power of negative 10 end exponent straight m space equals space 7.4 space cross times space 10 to the power of negative 11 end exponent straight m

Some More Questions From Some Basic Concepts of Chemistry Chapter

Define the term significant figures.

What is the number of significant figures in 0.0026?

What is the number of significant figures in 9.984?

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?

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