3 years ago

3 examples of electrochemical cell

1 answer:

3 0

A battery powering something is an example of a galvanic cell. Rechargeable batteries are examples of both types of cell: they operate as galvanic cells when they are powering a device and as electrolytic cells when they are being recharged.

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What is the molarity of a solution which contains 0.80 mol of HCl in 250mL of<br> solution?

mariarad [96]

Answer:

3.2M HCl Solution

Explanation:

Molarity = moles of solute / volume of solution expressed in liters

moles of solute = 0.80 moles HCl

volume of solution = 250 ml = 0.250 Liter

Molarity (M) = 0.80 moles HCl / 0.250 Liters = 3.2M HCl Solution

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3 years ago

Fredrick is doing a lab on pH. He uses many household items to determine the pH of his items. Which of his actions best describe

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Explanation:

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3 years ago

For the generic equilibrium HA(aq) ⇌ H+(aq) + A−(aq), which of these statements is true? For the generic equilibrium , which of

earnstyle [38]

Answer:

The correct answer is The equilibrium constant for this reaction changes as the pH changes.

Explanation:

The equilibrium constant of a reaction depends of pH and viceverca.There is a equation that link pH with equilibrium constant Ka(for assumption).The equation is given below,

pH=pKa+log[A-/HA]

where[A-] is the concentration of conjugate base and [HA] is the concentration of conjugate acid.

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3 years ago

What volume of a 1.0 M HCl is required to completely neutralize 25.0 ml of a 1.0 M KOH? 50.0 ml 25.0 ml 75.0 ml 100 ml 1.0 ml

lys-0071 [83]

No need 4 calculatinh
the volume needed is 25.o ml coz it requires the same amt of vol to neutralise koh

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Compared to an ordinary chemical reaction a fission reaction will

Nataly_w [17]

Release larger amouts of energy

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3 years ago