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Chemistry
What is correct for 10 g of CaCO3 ?
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Q. What is correct for 10 g of $CaCO_3$ ?
Some Basic Concepts of Chemistry
A
It contains 1 g atom of carbon
11%
B
It contains 0.3 g atoms of oxygen
69%
C
It contains 12 g of calcium
9%
D
It refers to 0.1 g-equivalent of $CaCO_3$
12%
Solution:
$10\,g$ of $CaCO_{3}=\frac{10}{100}$
$=0.1\,g$ mol of $CaCO_{3}$
$=0\cdot1 \times 3$ g-atom of oxygen
$=0\cdot3\,g$ atoms of oxygen