Some Basic Concepts of Chemistry - Result Question 93

####31. Calculate the amount of calcium oxide required when it reacts with 852g of P4O10.

(2005, 2M)

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Solution:

  1. 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 CO2 = electrons present in one carbon atom

=6+2×8=22.

+2× electrons present in one oxygen atom



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