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3 years ago

Draw the Lewis Structure for H2O.

Chemistry

1 answer:

GalinKa [24]3 years ago

3 0

Answer:

Structure has been shown below

Explanation:

In a Lewis structure, least electronegative atom is taken as central atom (except H)
Total valence electrons of constituting atoms are used to construct Lewis structure
A bond between two atoms are represented by a horizontal line or a dotted line (two dots).
Spatial rearrangement of atoms are neglected in Lewis structure.
H has one valence electron and O has six valence electrons. So, total valence electrons in $H_{2}O$ are 8
Lewis structure of $H_{2}O$ has been given below.

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pickupchik [31]

Answer:

14 moles of oxygen needed to produce 12 moles of H2O.

Explanation:

We are given that balance eqaution

$2C_2H_6+7O_2\rightarrow 4CO_2+6H_2O$

We have to find number of moles of O2 needed to produce 12 moles of H2O.

From given equation

We can see that

6 moles of H2O produced by Oxygen =7 moles

1 mole of H2O produced by Oxygen= $\frac{7}{6}$ moles

12 moles of H2O produced by Oxygen= $\frac{7}{6}\times 12$ moles

12 moles of H2O produced by Oxygen= $7\times 2$ moles

12 moles of H2O produced by Oxygen=14 moles

Hence, 14 moles of oxygen needed to produce 12 moles of H2O.

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