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Some Basic Concepts Of Chemistry

Question

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How many number of moles of oxygen atoms are present in 0.6 mole of hydrated oxalic acid (COOH)₂2H₂O?

Solution

table row cell 1 space mole thin space left parenthesis COOH right parenthesis subscript 2 2 straight H subscript 2 straight O space equals space 6 space mole space oxygen space atoms end cell row cell therefore space 0.6 space mole space open parentheses COOH subscript 2 2 straight H subscript 2 straight O space equals space 6 space cross times space 0.6 space mole space oxygen space atoms close parentheses end cell end table space equals 3.6 space mole space of space oxygen space atom.

Some More Questions From Some Basic Concepts of Chemistry Chapter

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?

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?

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