Question

CALCULATE THE NUMBER OF OXYGEN ATOMS IN 50 g OF CALCIUM CARBONATE.​

Answer 1

∴ 50g of CaCO3=1. 5∗(6. 022∗1023)=9. 035∗1023 oxygen atoms.

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Answer 2

$\underline\mathfrak{ANSWER:-}$

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The molecular formula of CaCO3 is 40+12+(16)3= 100

Hence, we have 50/100= 0.5mol of CaCO3.

From the formula, we can see that in 1 mol of CaCO3, 3 mol of oxygen atoms are present.

∴In 0.5 mol, we have 1.5 mol of oxygen atoms.

1 mol=6.022*10^23 particle, which, by math, gives us 9.011*10^23 atoms of oxygen in 50g of CaCO3.

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