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Chemistry-

General

Easy

Question

3.5 gms of carbon monoxide at 0°C and 760mm pressure contains _______ molecules. [Avogadro number = $6 cross times 10 to the power of 23$ ]

$7.5 \times 10^{23}$
$7.5 \times 10^{22}$
$1.5 \times 10^{24}$
$1.5 \times 10^{23}$

The correct answer is: $7.5 cross times 10 to the power of 22$

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Which of the following are correct statements.
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2) 106 dynes/c $straight m squared$ is called 1 bar
3) 105 Newtons / $straight m squared$ is Pascal
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1) 760 torr is equal to 1 atmosphere
2) 106 dynes/c $straight m squared$ is called 1 bar
3) 105 Newtons / $straight m squared$ is Pascal
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