3 years ago

The removal of silver tarnish from silverware using aluminum foil and a solution of electrolyte is an example of

Chemistry

1 answer:

eimsori [14]3 years ago

8 0

Answer:

The answer is C. An electrochemical cell.

Explanation:

The aluminum ion react with the sulfide to form aluminum sulfide.

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The table shows the pH levels of four common items. If a student tests a sample of each item, which will turn a strip of red lit

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The answer is d, hand soap.

Hand soap is alkaline and red litmus paper turns blue when exposed to alkaline solution.

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3 years ago

Are the bases on the interior or the exterior of the double helix? Are they randomly arranged or neatly stacked?

Lemur [1.5K]

the double helix is hydrogen bonded through the bases only so the bases are inside the helix only

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3 years ago

Which of the following would be expected to have the lowest first ionization energy?

scoundrel [369]

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o2- Due to lowest Zeff.

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3 years ago

ammonium bromide reacts with copper(i) sulfate in aqueous solution to form a solid precipitate. what is the net ionic equation f

sukhopar [10]

Answer:

$Br^-(aq)+Cu^+(aq)\rightarrow CuBr(s)$

Explanation:

Hello,

In this case, the molecular chemical reaction is written as:

$2NH_4Br(aq)+Cu_2S(aq)\rightarrow 2CuBr(s)+(NH_4)_2SO_4(aq)$

In such a way, considering the net ionic notation and the solid yielded copper (I) bromide, we write:

$2NH_4^+(aq)+Br^-(aq)+Cu^+(aq)+SO_4^{2-}(aq)\rightarrow CuBr(s)+NH_4^+(aq)+SO_4^{2-}(aq)$

Whereas ammonium and sulfate ions are spectator ions, therefore the net ionic equation is:

$Br^-(aq)+Cu^+(aq)\rightarrow CuBr(s)$

Regards.

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