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Harlamova29_29 [7]
3 years ago
6

When a non metal gains or shares by two electrons,its valency will be​

Chemistry
2 answers:
Assoli18 [71]3 years ago
8 0

When a non metal gains or share by two electrons then the valency will be 2^- or 2^+

Helen [10]3 years ago
6 0
As electrons are negatively charged particles, if it loses 2 electrons, there will be more protons than electrons by 2, therefore the valency will be 2+. If it gains 2 electrons, there will be more electrons than protons by 2, therefore the valency in this case will be 2-.
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Object A specific heat is 2.45 J/g C and object B specific heat is 0.82 J/g C. Which object will heat up more if they have the s
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Explanation:

The formula for specific heat is as follows.

                  Q = m C \Delta T

Where,

                      Q = heat provided

                      m = mass

                      C = specific heat

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Now, both the objects have same mass and equal amount of heat is applied.

According to the formula, the equation will be as follows.

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                  m C_{1}\Delta T = m C_{2}\Delta T_{2}

Cancel m from both sides, as mass is same. Therefore,

            C_{1} (T_{f} - T_{i})_A = C_{2}(T_{f} - T_{i})_B

Cancel out the initial temperature and put the values of specific heat, then the equation will be as follows.

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Therefore, from the above equation it can be concluded that the object with low specific heat will heat up more as its specific heat will be inversely proportional to its final temperature.

Hence, object B will heat up more.

                   


           

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How do I express this unit in the correct form with the correct number of significant figures
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