Isomer is defined as compounds with the same formula but different arrangement of atoms in its molecule and they differ in their properties. The <span>representation that can be used to show differences between isomers is the use of structural formula. It shows the arrangement of each atoms. It cant be molecular formula and 3D drawing because it does not show the arrangement of the atoms.</span><span>
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The unknown alcohol = 2-propanol
<h3>Further explanation</h3>
Given
volume = 50 ml
mass = 39.4 g
Required
The unknown alcohol
Solution
Density of sample :
= mass : volume
= 39.4 g : 50 ml
= 0.788 g/ml
The unknown alcohol at room temperature = liquid, so the unknown alcohol is 2-propanol because it has temperature range between -90 to 82 for liquid and the density = 0.788 g/ml
The reaction is an exothermic reaction and the temperature change is calculated using the formula below:
- Change in temperature = final temperature - initial temperature
<h3>What kind of heat change occurs when anhydrous copper(II) sulfate is dissolved in water?</h3>
When, anhydrous copper(II) sulfate is dissolved in water, heat is given off to the surroundings and the temperature of the solution formed is higher than the temperature of the water used in dissolving it.
This type of reaction is known as an exothermic reaction.
The temperature increase is calculated using the formula below:
- Change in temperature = final temperature - initial temperature
In conclusion, exothermic reactions result in increase in temperature of their surroundings.
Learn more about exothermic reactions at: brainly.com/question/2924714
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Answer:
A. air pressure,this is answer.