- Oxidation is loss of electrons, gain of oxygen or loss of hydrogen.
- Reduction is gain of electrons, loss of oxygen or gain or hydrogen.
Q4: The average heat evolved by the oxidation of food in an average adult per hour per kilogram of body weight is 7.20 ୩ ୩ ୦୰.
1 answer:
Answer:
The entropy change of the surroundings associated with this heat transfer is 255.9J/K
Explanation:
The heat evolved by the oxidation of food is 7.2J/Kg.h thus, multiplying the heat by the weight of the person and by the time the total heat (q) is obtained. In this case, the weight is 62.0Kg and a weak has 168 hours.
The entropy change of the surrounding associated with this heat transfer can be calculated by the ratio between the heat exchanged and the temperature.
ΔS =
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Answer:
The temperature must be changed to 4 times of the initial temperature so as to keep the pressure and the volume the same.
Explanation:
Pressure in the container is P and volume is V.
Temperature of the helium gas molecules =
Molecules helium gas = x
Moles of helium has =
PV = nRT (Ideal gas equation)
...[1]
After removal of helium gas only a fourth of the gas molecules remains and pressure in the container and volume should remain same.
Molecules of helium left after removal =
Moles of helium has left after removal =
...[2]
The temperature must be changed to 4 times of the initial temperature so as to keep the pressure and the volume the same.
Answer:
pH
Explanation:
For every mole of hydrochloric acid, one mole of hydronium ion is required. Thus, in order to neutralize 0.014 moles of HCL, 0.014 moles of hydronium is required.
pH
Substituting the available values in above equation, we can say that the pH of the solution is equal to
pH
pH of a M HCL solution