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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A solid is placed in a solution. Which observation most likely indicates that a chemical reaction has occurred?

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A change in color, odor, or texture

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The mass of an object is 205 gram while the volume was measured to be 82.5 mL. What is this object's density?

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2.48 g/mL

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3 years ago

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2 years ago

You work for a cutlery manufacturer who wants to electrolytically precipitate 0.500 g of silver onto each piece of a batch of 25

ICE Princess25 [194]

Answer:

373.1 mL of AgCN (aq) must be poured into your electrolysis vat to ensure you have sufficient Ag to plate all of the forks.

Explanation:

Mass of silver to be precipitated on ecah spoon = 0.500 g

Number of silver spoons = 250

Total mass of silver = 250 × 0.500 g = 125 g

$Moles (n)=Molarity(M)\times Volume (L)$

Moles of AgCN = n = $\frac{125 g}{134 g/mol}=0.9328 mol$

Volume of AgCN solution =V

Molarity of the AgCN = 2.50 M

$V=\frac{0.9328 mol}{2.50 M}=0.3731 L=373.1 mL$

(1 L = 1000 mL)

373.1 mL of AgCN (aq) must be poured into your electrolysis vat to ensure you have sufficient Ag to plate all of the forks.

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3 years ago