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4 years ago

4. Energy can be conserved by -

Chemistry

1 answer:

mart [117]4 years ago

4 0

Energy can be conserved by efficient energy use.

Answer: Option A

Explanation:

Energy can be transferred from one form to another, but it cannot be destroyed or created. So it can be conserved if efficiently used. Thus efficient usage of energy lead to conservation of energy. Due to conservation of energy, the forces can be renewable and non-renewable.

So, we should know how the input energy can be completely converted to another form of energy leading to efficient usage of energy without any loss. As if there is no loss, input energy will be equal to output energy leading to 100% efficiency.

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For the reaction ag2s(s) ⇌ 2 ag+ (aq) + s2- (aq), keq = 2.4 × 10-4 and the equilibrium concentration of silver ion is [ag+] = 2.

Juliette [100K]

Answer : The concentration of silver ion is, $3.8\times 10^{-3}M$

Explanation :

Equilibrium constant : It is defined as the equilibrium constant. It is defined as the ratio of concentration of products to the concentration of reactants.

The equilibrium expression for the reaction is determined by multiplying the concentrations of products and divided by the concentrations of the reactants and each concentration is raised to the power that is equal to the coefficient in the balanced reaction.

As we know that the concentrations of pure solids and liquids are constant that is they do not change. Thus, they are not included in the equilibrium expression.

The given equilibrium reaction is,

$Ag_2S(s)\rightleftharpoons 2Ag^+(aq)+S^{2-}(aq)$

The expression of $K$ will be,

$K_{eq}=[Ag^+]^2[S^{2-}]$

$2.4\times 10^{-4}=(2.5\times 110^{-1})^2[S^{2-}]$

$[S^{2-}]=3.8\times 10^{-3}M$

Therefore, the concentration of silver ion is, $3.8\times 10^{-3}M$

4 0

3 years ago

Read 2 more answers

Explain how temperature and amount of precipitation can affect the type of plants and animals found in the grassland biome?

MArishka [77]

Temperature grasslands have hot summers and cold winters. Summer temperatures can be well over 100 degrees Fahrenheit, while winter temperatures can be as low as -40 degrees Fahrenheit. They typically have between 10 and 35 inches of precipitation a year, much of it occurring in the late spring and early summer. As climate conditions shift geographically so will the distributions of many plants and animals. The relatively flat terrain of grasslands increases vulnerability to climate change impacts, because habitats and species must migrate long distances to compensate for temperature shift.

3 0

3 years ago

To what temperature must 7. 50 moles of a gas have to be heated in a 20L container in order for it to exert a pressure of 6. 50

givi [52]

Answer:

21.14 K

Explanation:

We know the Ideal Gas Equation is :-

PV = nRT

=> T = PV/nR

=> T = 6.5 x 20 / 7.5 x 0.082

=> T = 130 / 6.15

=> T = 21.14 K

6 0

2 years ago

Which of the following is a combustion reaction

natima [27]

I didnt see the answers for answer your question

5 0

3 years ago

Read 2 more answers

What stress will shift the following equilibrium system to the right?

Morgarella [4.7K]

Answer:I think it’s Decreasing Temperature besucase increasing temperature would shift it to the left

Explanation:

6 0

2 years ago