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Chemistry-

General

Easy

Question

The RMS velocity of a gas is $3.5 cross times 10 to the power of 4$ cm/sec The most probable velocity of the molecules is

$2.856 \times 10^{4}$ cm/sec
$3.22 \times 10^{4}$ cm/sec
$3.798 \times 10^{4}$ cm/sec
$4.289 \times 10^{4}$ cm/sec

The correct answer is: $2.856 cross times 10 to the power of 4$ cm/sec

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A student forgot to add the reaction mixture to the round bottomed flask at 27°C but instead he/she placed the flask on the flame. After a lapse of time, he realized his mistake and using a pyrometer he found the temperature of flask was 477°C. The fraction of air that has been expelled out is

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parallel

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

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Which of the following are correct statements.
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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Which of the following are correct statements.
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
4) Atmosphere is $1.013 cross times 10 to the power of 5$ ⁵dynes/ $straight m squared$

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The preparation of SO₃(g) by $S O subscript 2 end subscript left parenthesis g right parenthesis plus fraction numerator 1 over denominator 2 end fraction O subscript 2 end subscript left parenthesis g right parenthesis J S O subscript 1 end subscript left parenthesis g right parenthesis$ is an exothermic reaction. If the preparation follows the following temperature-pressure relationship for its % yield, then for temperatures T₁ ,T₂ and T₃ . The correct option is

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