Question

How to find the molecular weight of calcium oxide?

Answer 1

Answer:

C a O

Explanation:

Calcium has a valence of +2

The oxide ion has a charge of -2

(See periodic table for these values)

C a 2 + O 2 −

= C a O

hope it helps u

Answer 2

Question:

Find the molecular weight of Calcium Oxide

Subject:

Chemistry

Topic:

Finding the molecular weight of the given compound

Solution:

To find the molecular weight of Calcium Oxide

Calcium has the valency of +2 and Oxygen has the valency of -2.After Criss Cross Method we get CaO ( +2 and -2 get cancelled )

$\boxed{ \begin{minipage}{10cm} Atomic Weights:\\\\\\Atomic Weight of Calcium = 40\\\\Atomic Weight of Oxygen = 16 \\\\\\Number of Atoms present:\\\\\\Number of Calcium atoms present = 1\\\\Number of Oxygen atoms present = 1\\\\\\Molecular Weight of CaO =\\\\\\Ca = 1\times40\\\\O=1\times16\\\\\\ Molecular Weight of CaO = 40+16=56amu \end{minipage} }$

Answer:

Molecular Weight of CaO = 56 amu

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