Answer:
Copper ions are reduced into copper atoms.
Cu²⁺₍aq₎ + 2e⁻ → Cu₍s₎
Explanation:
During electrolysis, the positive H⁺ and Cu⁺ ions move to the negative cathode and negative OH⁻ and Cl⁻ ions move to the positive anode.
At cathode, copper ions are preferentially discharged due to the low electromotive force required to discharge them compared to the hydrogen ion. The copper ions gain the two electrons lost by the chloride ions when the are discharged. (2 Cl⁻₍aq₎ → Cl₂₍g₎ + 2e⁻)
Thus the half equation is as follows:
Cu²⁺₍aq₎ + 2e⁻ → Cu₍s₎
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Answer:
the diaphragm and rib muscles contract
Explanation:
Inhalation is the set of movements that allows air to enter the lungs. In this process occurs the contraction of the diaphragm, causing its lowering. The intercostal muscles also contract causing the ribs to lift. This causes the chest to grow larger and the internal pressure of the lungs to become smaller than the external. With the reduction of intrapulmonary pressure, air ends up entering the airways and reaching the alveoli for gas exchange to occur.
Explanation:
The given data is as follows.
coefficient of volume expansion of glycerin (
) = 
linear expansion coefficient of aluminum,
=
Volume = 100 
The increase in volume of the cup will be calculated as follows.

= 
=
= 0.0759 
Formula for increase in volume of glycerine is as follows.

= 
= 0.5610 
Therefore, volume of glycerin spilled is calculated as follows.

= (0.5610 - 0.0759) 
= 0.4851 
Thus, we can conclude that 0.4851
glycerin will spill out of the cup.