How many oxygen atoms are present in 50 g of CaCo 3 -A- 12-044 - 1023B- 6-022 - 1023C- 3-011 - 1023D- 9-033 - 1023

The correct option is D 9.033 Molecular Mass of CaCo_3 = (40 × 1) + (12 × 1) + (16 × 3) = 100g ∴ 100g of CaCo_3 = 1 mole of CaCo_3 50g of CaCo_3 = 0.5 mo ...

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Standard XII

Chemistry

Atoms and Molecules

How many oxyg...

Question

How many oxygen atoms are present in 50g of $C a C o_{3}$ ?

3.011

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6.022

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9.033

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12.044

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Solution

The correct option is C
9.033

Molecular Mass of $C a C o_{3}$ = (40 $\times$ 1) + (12 $\times$ 1) + (16 $\times$ 3) = 100g
$∴$ 100g of $C a C o_{3}$ = 1 mole of $C a C o_{3}$
50g of $C a C o_{3}$ = 0.5 mole of $C a C o_{3}$
$1 m o l e o f C a C o_{3} = 3 \times 6.022 \times 10^{23} a t o m s o f O x y g e n 0.5 m o l e o f C a C o_{3} = \frac{3}{2} \times 6.022 \times 10^{(} 23) a t o m s o f O x y g e n = 9.033 \times 10^{23} a t o m s o f o x y g e n$

Suggest Corrections

How many oxygen atoms are present in 50g of CaCo3 ?

The correct option is C 9.033 Molecular Mass of CaCo3 = (40 × 1) + (12 × 1) + (16 × 3) = 100g ∴ 100g of CaCo3 = 1 mole of CaCo3 50g of CaCo3 = 0.5 mole of CaCo3 1 mole of CaCo3=3×6.022×1023atoms of Oxygen0.5 mole of CaCo3=32×6.022×10(23)atomsofOxygen=9.033×1023 atoms of oxygen

How many oxygen atoms are present in 50g of $C a C o_{3}$ ?