Please help me with this question! :-)

Answers

Answer 1

Answer: I am pretty sure the Ag(s) is the reducing agent
anode reaction: Ag(s)+HCl(aq)⇒H⁺+AgCl(s)+e⁻
which means that H⁺ is the oxidizing agent
cathode reaction: 2H⁺(aq)+2e⁻⇒H₂(g)
and the cell reaction is the combination of the anode and cathode reactions.
cell reaction: 2Ag(s)+2HCl(aq)⇒2AgCl(s)+H₂(g)

Related Questions

Which is more important in determining a compound’s melting points, polarity or molar mass? Why?
All of the questions
Which change occurs when an atom in an excitedstate returns to the ground state? (1) Energy is emitted. (2) Energy is absorbed. (3) The number of electrons decreases. (4) The number of electrons increases.
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A mixture consists of 25.60 grams of iron and4.25 grams of silver. What is the mole fraction ofsilver?

Which formula represents an unsaturatedorganic compound?
(1) CH4 (3) C3H8
(2) C2H4 (4) C4H10

Answers

Answer: (2) $C_2H_4$

Explanation: Unsaturated organic compounds are those compounds which contains carbon-carbon double or triple bond.

Saturated organic compounds are those compounds which contains carbon-carbon single bond.

$CH_4$ , $C_3H_8$ and $C_4H_10$ are all alkanes having general formula $C_nH_(2n+2)$ containing single bonds.

$C_2H_4$ is an alkene having general formula $C_nH_(2n)$ containing double bonds.

The only saturated hydrocarbons are Alkanes: $C_(n) H_(2n+2)$

From that we can see that:
CH4, C3H8 and C4H10 are saturated.

Therefore:
C2H4 is unsaturated. Answer is (2).

When are conservation efforts most effective? a. Conservation efforts are most effective when multiple groups cooperate. b. Conservation efforts are most effective when government is solely responsible for them. c. Conservation efforts are most effective with individual efforts. d. Conservation efforts are always effective.

Answers

Conservation efforts most effective if Conservation efforts are most effective when multiple groups cooperate. The answer is letter A. The rest of the choices do not answer the question above

Answer: Option (a) is the correct answer.

Explanation:

Conservation efforts means to carefully preserve or protect something. These efforts are fruitful when a majority of people or communities come together in order to preserve something good for the betterment of environment.

As when maximum number of people come lend their hands for help only then conservation efforts can be achieved.

For example, a city with maximum pollution can only be conserved when maximum groups of people decide to conserve plants or plant more number of trees.

Thus, we can conclude that conservation efforts are most effective when conservation efforts are most effective when multiple groups cooperate.

What is the role of microbes in maintain temperature on earth? (Role of microbes in CO2 and CH4recycling)

Answers

Answer:

Explanation:

As the bacteria are capable of surviving in the hot temperatures as thermophiles they can speed up their respiration rate and hence, will produce more carbon dioxide and potentially accelerating the climate change within a region. The other prokaryotes can also become the significant contributors of the carbon output and these are those which are highly sensitive to the temperature. Methane oxidizing bacteria are also responsible for the contribution in carbon and nitrogen cycles. These bacteria converts the important greenhouse gas methane into carbon and nitrogen compounds like CO2 and NO2 − respectively. Thus methane can be considered as precursor of the temperature rise.

Consider the following reversible, exothermic chemical reaction: 2C2H2(g) + 5O2(g) ↔4CO2(g) + 2H2O(g) All BUT one of the conditions will cause equilibrium to shift right and produce more of the products. Which change will cause the reaction to shift to the left?
A) adding oxygen
B) adding CO2
C) increasing the pressure
D) decreasing the temperature

Answers

Answer : The correct option is, (B) adding $CO_2$

Explanation :

Le-Chatelier's principle : This principle states that if any change in the variables of the reaction, the equilibrium will shift in the direction to minimize the effect.

Option A : adding oxygen

If the concentration of $O_2$ is increased on reactant side then the equilibrium will shift in the direction where decrease of concentration of $O_2$ takes place. Therefore, the equilibrium will shift in the right direction.

Option B : adding $CO_2$

If the concentration of $CO_2$ is increased on product side then the equilibrium will shift in the direction where decrease of concentration of $CO_2$ takes place. Therefore, the equilibrium will shift in the left direction.

Option C : increasing the pressure

If the pressure of the container is increased then the equilibrium will shift in the direction where the less number of moles of gas molecules is taking place. As the number of moles of gas molecules is greater at the product reactant side and less at product side. So, the equilibrium will shift in the right direction.

Option D : decreasing the temperature

As the given reaction is an exothermic reaction in which the heat is released during a chemical reaction. That means the temperature is decreased on the reactant side. If the temperature is decreased in the equilibrium then the equilibrium will shift in the direction where, temperature is getting increased. Thus, the reaction will shift to the right direction i.e, towards the product.

Adding CO2 increases Q and makes Q > K (K being the equilibrium constant for this reaction). As a result, the reaction will favor reactants until Q=K, so adding CO2 causes the reaction to proceed to the left. B is the correct answer.

An ice cube is dropped into boiling water. How will heat flow between the water and the ice cube?

Answers

On a microscopic (molecular) level, heat flows from the ice to the boiling water
at a minuscule rate, and from the water to the ice at a humongous rate.

Heat transfers from hot body to cold body. So when ice is dropped in water , the water at higher temperature will lose heat energy and is gained by the ice at less temperature. When the Net heat lost equals to Net heat gained i.e.,When both the bodies attain themal equilibrium, the flow of heat energy stops and both attain equal temperatures.

All fossil fuels contain this element. iron hydrogen copper magnesium

Answers

Answer : Option B) Hydrogen

Explanation :

All fossil fuels contains hydrocarbons in it. Amongst the given options hydrogen is the correct answer. Except that it contains carbon in it. Hydrocarbons are those class of compounds which contains hydrogen and carbon as element in it.

They are considered to be good fuels because they naturally bring out complete combustion as they contain hydrogen and carbon in its compound form.

B)Hydrogen is the answer.......

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