Refer to the diagram shown below.
State 1:
The heat of fusion is required for the ice to become water.
The amount of heat required is
Q₁ = (330 g)*(80 cal/g) = 26,400 cal
State 2:
Sensible heat is required to raise water at 0 C to the boiling point of 100 C.
The heat required is
Q₂ = (430g)*(1 cal/(g-C))*(100 C) = 43,000 cal
State 3:
The heat of vaporization is required to boil off the water.
The heat required is
(430 g)*(540 cal/g) = 232,200 cal
Total heat absorbed is
Q₁+Q₂+Q₃ = 301,600
Answer: 301,600 cal or 301.6 kcal
When you balance a redox equation using the half-reaction method, after balancing the atoms and the charges, we then add the two half reaction in order to show the overall redox reaction. From the overall reaction, we would see every compound that is involved in the reduction and oxidation of the oxidation states.
Answer:
An oxidation-reduction (redox) reaction is a type of chemical reaction that involves a transfer of electrons between two species. In redox reaction the oxidation number of a molecule, atom, or ion changes by gaining or losing an electron.
In the reaction : CuO+H
2
⟶Cu+H 2
O
n the reaction H2
is oxidized since it has lost electrons and Cu is reduced since it has gained electrons.
Explanation:
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