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Mixing of gases in liquids is an exothermic process,i.e., energy is released in this process. So, according to Le-Chatelier's principle, dissolution of gases in liquids are preferred in low temperature. When the temp. is increased, the rate of dissolution will decrease and may also proceed in the opposite direction.
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Answer:
Explanation:
For formation of a neutral ionic compound, the charges on cation and anion must be balanced. The cation is formed by loss of electrons by metals and anions are formed by gain of electrons by non metals.
Here element lead is having an oxidation state of +4 called as cation and is an anion with oxidation state of -2. Thus they combine and their oxidation states are exchanged and written in simplest whole number ratios to give neutral
Answer: C
Energy cannot be created nor destroyed, but it changes from one form to another
Explanation:
In physics and chemistry, the law of conservation of energy states that the total energy of an isolated system remains constant; it is said to be conserved over time. This law means that energy can neither be created nor destroyed; rather, it can only be transformed or transferred from one form to another.
qual é a equação
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