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3 years ago

Isomers have identical formulas and different

Chemistry

2 answers:

Gala2k [10]3 years ago

6 0

Answer: Different Molecular Structures

Explanation: Isomers are the substances which have same molecular formula but different structures.

These compounds also have different physical and chemical properties.

For eg - CH3CH2OH and CH3OCH3 these both are isomers . They have different identical formula and different structure.

CH3CH2OH is ethyl alcohol and CH3OCH3 is dimethyl ether which is least polar and the former one is highly polar thus used as polar protic solvents in the nucleophillic substitution reaction.

This can be easily distinguished with the structures provided.

Leno4ka [110]3 years ago

4 0

Molecular structure. Isomers have the same formula, so there is the same elements in both. But they have a different molecular structure and when drawn they look different

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3 years ago

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Propane (c3h8) is burned in oxygen to produce carbon dioxide and water. the heat of combustion of propane is -2012 kj/mole. how

Olegator [25]

$C_{3} H_{8} + 5 O_{2} ---\ \textgreater \ 3CO_{2} +4H_{2}O (-2012 \frac{kJ}{mol} )


3 mol 10 mol


C_{3}H_{8} is /excess /reactant

because 3 mol propane require 15 mol oxygen (by reaction)

5 mol oxygen ---1 mol propane, so

10 mol oxygen ---2 mol propane

Only 2 mole propane will be burned,

so 

2012 ( kJ/mol)*2 mol =4024 KJ heat will be given off

Correct answer is number 4.


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3 years ago

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3 years ago

A 35.40 gram hydrate of sodium carbonate, Na2CO3•nH2O, is heated to a constant mass. Its final weight is 30.2 g. What is formula

Sever21 [200]

Answer:

Na₂CO₃•H₂O

Explanation:

After it is heated, the remaining mass is the mass of sodium carbonate.

30.2 g Na₂CO₃

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35.4 g − 30.2 g = 5.2 g H₂O

Convert masses to moles:

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Normalize by dividing by the smallest:

0.285 / 0.285 = 1.00 mol Na₂CO₃

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How many moles of HCl are required to completely neutralize 0.30 moles of Ca(OH)2?

hammer [34]

Each mole of Ca(OH)₂ will produce 2 moles of OH- ions

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