The substance whose lewis structure shows three covalent bonds is

Chemistry

1 answer:

Gnoma [55]2 years ago

4 0

The substance whose Lewis structure shows three covalent bonds is Nitrogen gas molecule.

<h3>What is Lewis structure?</h3>

Lewis structure is a dot structure which gives idea about the number of valence electrons that are involved in the bonding within the molecule.

Lewis dot structure of nitrogen gas will be expressed as in the attached image, where between two nitrogen atoms triple bond is present. That triple bond is formed by the sharing of electrons and known as covalent bonds.

Hence in nitrogen gas molecule three covalent bonds is present.

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Empirical formula of 81.8 carbon and 18.2 hydrogen

Steps

Find the empirical formula of a compound that has 81.8% of Carbon (C), 18.2% of Hydrogen (H).
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<h3> Combine to get the empirical formula: C2H4</h3>

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Serena is making an experiment. for that, she needs 20 grams of a 52% solution of salt. she has two large bottles of salt water:

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This is a simple algebraic problem, specifically for the mixture type of problem. Let x be the mass of 40% solution and y be the mass of 70% solution. The first equation would then be:

x + y = 20 --> eqn 1

The second equation would be the mass balance shown below:

(x)(0.40) + y(0.70) = 20(0.52) --> eqn 2

Rearranging eqn 1,
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Substitute this to eqn 2:

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