Most of the energy travels trough the water
1175.7 kilojoules calories are contained in one such candy bar.
A calorie is a unit of power. In vitamins, calories check with the strength human beings get from the food and drinks they eat, and the strength they use in bodily activity. calories are indexed inside the dietary statistics on all food packaging. Many weight reduction applications middle around lowering the consumption of calories.
One joule is described as the quantity of strength exerted while a pressure of 1 newton is applied over a displacement of 1 meter. One joule is the equivalent of one watt of power radiated or dissipated for one 2nd. In some packages, the British thermal unit (Btu) is used to specific power.
Joule, unit of labor or energy within the worldwide system of devices (SI); it is identical to the paintings carried out by using a pressure of 1 newton appearing one meter.
Explanation :
1KCal = 4.184 K Joules
= 281Kcal= (281*4.184)K Joules
= 1175.7KJoules
= 1.18 * 10³ joules.
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Answer:
H₂(g) + Cu²⁺(aq) → 2H⁺(aq) + Cu(s)
Explanation:
In a redox reaction, one half-reaction is the oxidation (where the atom loss electrons) whereas the other reaction is the reduction (Where the atom is gaining electrons.
In the reactions:
H₂(g) → 2H⁺(aq) + 2e⁻ oxidation
Here, the reaction is written as the oxidation because the hydrogen H₂ is in oxidation state 0 and H⁺ in +1. That means each atom is loosing one electron.
Cu²⁺(aq) + 2e⁻ → Cu(s) reduction
And here, the Cu²⁺ is in +2 oxidation state and after the reaction is in Cu(s) 0 state. Thus, each atom is gaining 2 electrons.
The sum of both reactions is:
H₂(g) + Cu²⁺(aq) + 2e⁻ → 2H⁺(aq) + 2e⁻ + Cu(s)
Subtracting the electrons in both sides of the reaction:
<h3>H₂(g) + Cu²⁺(aq) → 2H⁺(aq) + Cu(s) </h3>