MHT-CET

Some Basic Concepts of Ch question bank (Chemistry)

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Q1.

A coordination complex contains $2.6\ \%$ of Mg. Find the number of Mg atoms in $5.0$ g of this sample.
(gram atomic mass of Mg $= 24$ g )

(A)

$1.5 \times 10^{21}$

(B)

$3.26 \times 10^{21}$

(C)

$2.82 \times 10^{21}$

(D)

$4.3 \times 10^{21}$

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Q2.

Calculate the number of atoms in 52 moles of argon.

(A)

$218.8 \times 10^{23}$

(B)

$545.1 \times 10^{23}$

(C)

$313.1 \times 10^{23}$

(D)

$136.3 \times 10^{23}$

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