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lora16 [44]
3 years ago
14

Choose all the answers that apply.

Chemistry
1 answer:
kipiarov [429]3 years ago
3 0

Answer:

a. and b. both are correct. the number of electrons and neutrons IN THIS CASE of nitrogen Is same.

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Which type of mass movement is the most destructive?
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•landslide

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Landslides are exceptionally destructive. Homes may be destroyed as hillsides collapse. Landslides can even bury entire villages. Landslides may create lakes when the rocky material dams a stream.

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Which is a compound?<br><br> A) Kr<br><br> B) O2<br><br> C)Cl2<br><br> D)CuF2
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Is a particle with no charge
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3 years ago
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Lithium and nitrogen react in a combination reaction to produce lithium nitride: 6Li (s) + N2 (g) → 2Li3N (s) In a particular ex
seraphim [82]

Answer: 6.71 g

Explanation: 6Li(s)+N_2(g)\rightarrow 2Li_3N

{\text{no of moles}}=\frac{\text{Given mass}}{\text{Molar mass}}

{\text {moles of lithium}}=\frac{4g}{6.914g/mol}=0.578moles

\text{moles of nitrogen}=\frac{4g}{28g/mol}=0.143moles

Limiting reagent is the reagent which limits the formation of product. Excess reagent is one which is in excess and thus remains unreacted.

Thus lithium is the limiting reagent and nitrogen is the excess reagent.

As can be seen from the balanced chemical equation,  6 moles of lithium reacts with 1 mole of nitrogen to give 2 moles of lithium nitride.

Thus 0.578 moles of lithium react with 0.096 moles of nitrogen.

6 moles of lithium give = 2 moles of lithium nitride

Thus 0.578 moles of lithium give=\frac{2}{6}\times {0.578}=0.19moles of lithium nitride.

Mass of lithium nitride Li_3N={\text {no of moles}}\times {\text {Molecular mass}}

Mass of lithium nitrideLi_3N={0.192moles}\times {34.83g/mol}=6.71g


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3 years ago
What is the term for a solid that forms when two liquids are mixed together
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The correct answer would be C. a precipitate
Hope this helped!
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