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Natasha2012 [34]
3 years ago
14

Help please I need it

Chemistry
1 answer:
anastassius [24]3 years ago
8 0
2 and 4 i think sorry if wrong
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Answer:

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Question 2 (1 point)
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John Dalton

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2al(s)+3cl2(g)→2alcl3(s) δh∘ = -1408.4 kj. how much heat (in kilojoules) is released on reaction of 4.70 g of al?
Annette [7]
Answer:
             - 122.58 kJ

Solution:
According to following  equation,

                          <span>2 Al  +  3 Cl</span>₂    <span>→    2 AlCl</span>₃    <span> δH</span>°<span> = -1408.4 kJ
</span>
When,
         54 g (2 mole) Al on reaction releases  =  <span>1408.4 kJ heat
So,
                               4.70 g of Al will release  =  X kJ of Heat

Solving for X,
                      X  =  (4.70 g </span>× 1408.4 kJ) ÷ 54 g

                      X  =  - 122.58 kJ
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At least three types of RNA are required for protein synthesis. Compare and contrast mRNA, rRNA, and tRNA by moving the descript
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Explanation:

The difference among mRNA, tRNA and rRNA are:

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tRNA:  Delivers amino acids to the site of protein synthesis. It also has an anticodon that interact with specific codon of another nucleus.

The similarity among mRNA, rRNA and tRNA is that they all consists of ribonucleic  acid and can exist outside the nucleus in eukaryotes.

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Answer:

so i never did this befor so i am sorry hope you get the answer

Explanation:

7 0
3 years ago
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