Answer : The balanced redox reaction will be,
Explanation :
The given chemical equation is,
In the half reaction method, the number of atoms in each half reaction and number of electrons must be balanced.
The half reactions in the acidic medium are :
Reduction : ......(1)
Oxidation : .......(2)
Now multiply the equation (1) by 2 and equation (2) by 3 then added both equation, we get the balanced redox reaction.
Thus, the balanced redox reaction will be,
Answer:
B. The student conducted the reaction in an open beaker, which allowed one of the products, a gas, to escape.
Explanation:
Based on the law of conservation of mass, matter is neither created nor destroyed during the course of a chemical reaction.
By this premise, the mass of reactants and products must remain the same during the course of a reaction.
- Here we find that this is not the case.
- The mass of the product reported is less than the mass of the reactants.
- The problem is that the mass of the gas bubbles produced during the course of this reaction was not accounted for.
- This leaves a mass deficit already
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Answer:
$13,500
Explanation:
The differential analysis of the proposal to replace the commercial oven is shown below:-
The Total differential decrease in cost = Annual maintenance cost reduction × Number of years applicable
= $23,000 × 5
= $115,000
Inflow cash = The Total differential decrease in cost + Proceeds from sale of equipment
= 115,000 + $8,500
= $123,500
The Net differential decrease in cost from replacing equipment = Inflow cash - Cost of new equipment
= $123,500 - $110,000
= $13,500