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2 years ago

Mendeleev created this table as he noticed that a

Chemistry

1 answer:

Nimfa-mama [501]2 years ago

4 0

Answer:

Mendeleev had left the noble gases out of his periodic table.

Explanation:

Mendeleev's periodic table is pictured in the image attached to the question.

Mendeleev's table obviously lacked the noble gases. The reason for this grave omission is simple; the noble gases were not known as at the time when he formulated his periodic table. There weren't any known elements whose properties were similar to the properties of the noble gases. This would have lead him to suspect their existence.

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aivan3 [116]

Answer:

$Molarity=1.22\ M$

Explanation:

Given:

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Also, P (mm Hg) = P (atm) / 760

Pressure = 745 / 760 = 0.9803 atm

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The conversion of T( °C) to T(K) is shown below:

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So,

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Applying the equation as:

0.9803 atm × 0.200 L = n × 0.0821 L.atm/K.mol × 292.15 K

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1 mole of $H_2SO_4$ react with 2 moles of $NaOH$

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