Some Basic Concepts of Chemistry - Result Question 93
####31. Calculate the amount of calcium oxide required when it reacts with $852 g$ of $P _4 O _{10}$.
(2005, 2M)
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Solution:
- In a neutral atom, atomic number represents the number of protons inside the nucleus and equal number of electrons around it. Therefore, the number of total electrons in molecule of $CO _2$ $=$ electrons present in one carbon atom
$=6+2 \times 8=22$.
$+2 \times$ electrons present in one oxygen atom
