Explanation:
Oxidizing agents are defined as the agents which oxidize other substance and itself gets reduced. These agents undergoes reduction reactions.
Reducing agents are defined as the agents which reduces the other substance and itself gets oxidized. These agents undergoes reduction reactions.
When oxidizing agent-A get reduced it changes green to colorless.
When oxidizing agent-B get reduced it changes yellow to colorless.
When oxidizing agent-C get reduced it changes red to colorless.
1) When we added solution C that oxidizing agent-C in solution containing 
ions changes from red to yellow:
So, in this C is oxidizing ion into B which yellow in color.
C is reduced and ions is oxidized.
Here, are oxidized by C which means that C a better oxidizing agent than B.
2) When a solution of C is mixed with one containing A- ions, the color remains red.
no reaction
As we had observed that no color change was seen on adding substance C to the solution with 
ions which indicates that C was unable to oxidize ions. Hence, not a better oxidizing agent than A
Answer:
Exothermic
General Formulas and Concepts:
<u>Chemistry</u>
<u>Thermodynamics</u>
- Exothermic - releases heat as a product
- Endothermic - absorbs heat as a reactant
Explanation:
We are given that the reaction takes place between C₂H₄ (g) and H₂O (g) to form CH₃CH₂OH (g) and is <em>releasing heat</em>.
This means that heat would be product as it is being released during the reaction.
Therefore, we have an exothermic reaction.
Answer:
D. A weakly acidic solution.
Explanation:
Sublimation is defined as a process in which solid state of a substance directly changes into vapor or gaseous state without undergoing liquid phase.
For example, naphthalene balls show sublimation at room temperature.
As this process does not cause any change in chemical composition of a substance. Hence, it is known as a physical process.
Similarly, when 
sublimes readily at 
. This shows change in physical state of carbon dioxide is taking place, i.e, from solid to gaseous phase.
Thus, we can conclude that when sublimes readily at then it means physical properties are usually associated with a compound that undergoes this kind of change.
Answer:
At birth, there are approximately 1 million eggs; and by the time of puberty, only about 300,000 remain. Of these, only 300 to 400 will be ovulated during a woman's reproductive lifetime. Fertility can drop as a woman ages due to decreasing number and quality of the remaining eggs.
Explanation:
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