-delta H symbolises an exothermic reaction. Hence, it gives off heat. Reversely, it would absorb heat.
Answer:
Explanation: English please
The balanced skeleton reactions are given below
2CrO₄²⁻(aq) + 3Cu(s) +8(l) → 2Cr(OH)₃(s) + 3Cu(OH)₂(s) + 6(aq)
The oxidising agent and reducing agents are Cr and Cu .
There are following steps involve in balance redox reaction in basic medium .
- First divide the reaction into two half reactions which give oxidation and reduction half reaction.
- Then balance the elements other than oxygen and hydrogen atom.
- Balance the oxygen atom by adding where number of oxygen is less .
- Balance the hydrogen atom by adding on another side of where water molecule added.
- Add ions to both sides to neutralize ion.
- Combine and ion to make .
- Balance the charge by adding .
The species which reduces the other species in the redox reaction is called oxidizing agent . Similarly , the species which oxidize the other species in the redox reaction is called reducing agent .
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<span>The balance equation will be
234/91 Pa --> 234/92 U + </span>a beta particle
An example of it is potassium-40 nucleus. A beta particle has a high-energy and high-speed electron in the radioactive decay. These particles ranges <span> from 0 MeV to 4 MeV. It carry one charge only and it is positively charge, it is called positron.</span>
<u><em>The variable quantities are expressed by the ideal gas law equation are; </em></u>
<u><em>pressure, volume, temperature, number of moles</em></u>
<u><em /></u>
This question is simply based on defining the ideal gas law.
- Now, A gas is considered to ideal if its particles are so far from each other in such a manner that they don't exhibit any forces of attraction between themselves. Now, in real life this is not possible but under high temperatures and pressure, we can have something close to it and that's why ideal gas laws are very important.
- This law states that states that the pressure, temperature, number of moles and volume of a gas are related to each other by the formula;
PV = nRT
Where;
P is pressure
V is volume
n is number of moles
T is temperature
R is ideal gas constant (This is fixed and not variable)
The variable quantities are expressed by the ideal gas law equation are;
<em>pressure, volume, temperature, number of moles</em>
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