Answer: Option (d) is the correct answer.
Explanation:
When salt is added to water then the sodium and chlorine ions dissociate.
After the dissociation, both the positive and negative ions that is the sodium and chlorine ions will be surrounded by the water molecules. Thereafter, the positive part of water molecule will be attracted to the negative ions that is the chlorine ions and vice versa.
As sodium ion is a cation so it will hold a positive charge, and chlorine ion is an anion so it will hold a negative charge.
Thus, it can be concluded that when salt is added to water, all of the above will happen except option (d) that is the salt breaks into positive chlorine ions and negative sodium ions.
Answer 1
Correct Option: <span>A) The water received more energy than the alcohol.
Reason:
In the present case, the heating rate of both water and alcohol was same. So same amount of heat was supplied, at any given point of time. However, water took more time to reach the temperature of 50 oC. This clearly depicts that, more amount of heat was supplied to water, as compared to alcohol, to reach the desired temperature. It also suggest that, w</span>ater
takes longer to change its temperature than the alcohol<span>
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Answer 2:
Correct option: </span> For the same temperature change, water requires more energy<span>
Reason:
In the present case, time required for water to achieved the same temperature as that of alcohol, at a constant heating rate, was more. This suggest that f</span>or the same temperature change, water requires more energy. This can be attributed to the fact that, hydrogen bonding in water is more stronger than that in alcohol. Due to this, more amount of energy is required to overcome hydrogen-bonding in water.
What will happen in a case there is different number of electrons compare to protons is<em> D: The particle is considered an</em><em> ion.</em>
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- An ion can be regarded as atom or molecule which posses some amount of electron more than amount of protons and vice versa.
- It can be regarded as molecules that has a charge. i.e ( -ve or +ve)
- When the number of electron in this molecules or atom is more that that of the present protons, then the ion is negatively charged ion.
- When a particles posses less electron compare to the present protons then the ion is positively charged.
Therefore, an ion can be charged positively and it can be charged negatively
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Random errors will shift each measurement from its true value by a random amount and in a random direction. These will affect reliability (since they're random) but may not affect the overall accuracy of a result.
The name carbohydrate indicate chemical composition of sugars, as carb means carbon and hydrate means hydrogen and oxygen.
Carbohydrate indicates the presence of carbon, hydrogen and oxygen of which sugar molecule is made up of.
Carbohydrate can be defined as naturally occuring molecules that is made of carbon, hydrogen and oxygen.