Wafting the air above a chemical is one way to it directly

Chemistry

1 answer:

miskamm [114]3 years ago

8 0

To smell it directly

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Explain why food chains do not tend to exceed four links.

Softa [21]

Energy is "lost" at each trophic level when you go up the chain. Typically there are fewer organisms at higher trophic levels.

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2 years ago

If 125 grams of Cu reacts 75 grams of HNO3, how many grams of Cu(NO3) form?

melisa1 [442]

Answer: 37.5grams of Cu(NO3)2

Cu(1mol) + 2HNO3(2mol) —> Cu(NO3)2 + H2

125 grams of Cu(1mol) reacts with 75 grams of HNO3(2mol)

HNO3 is the limiting substance, therefore, 75 grams is the limiting quantity.

Therefore, 2mol of HNO3 forms 1mol of Cu(NO3)2

75 grams of HNO3 forms...75grams x 1mol/2mol = 37.5 grams of Cu(NO3)2

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2 years ago

Element whose atoms have completed their outer energy level are the ____

umka21 [38]

Answer:

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Explanation:

nobles gases have their outer energy level complete

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What factors do you think should be considered in selecting a metal to use to reclaim copper? Which factor do you think is the m

Lana71 [14]

Answer:

Aluminum

Explanation:

<h3> Aluminum would be the best choice to reuse copper from the copper chloride solution because it In the aluminum–copper reaction, the chloride ions help remove the aluminum oxide coating so that a reaction can take place through the oxidation of aluminum and the reduction of copper ions.The aluminum–copper chloride reaction is a simplified version of a waste reclamation and reduction strategy for handling toxic-waste materials. </h3>

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2 years ago

A force is applied but nothing happens

Lana71 [14]

If a force is applied but nothing happens, then it means that the forces are balanced. Being at such state, equal forces are acting on an object in opposite directions. Hope this answers the question. Have a nice day. Feel free to ask more questions.

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