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ivolga24 [154]
2 years ago
7

Are synthetic materials useful? Explain your answer.

Chemistry
2 answers:
Sati [7]2 years ago
8 0
They can be like for conversion to renewable resources!
Doss [256]2 years ago
5 0
Yes! synthetic materials, such as nylon and polyester, are improved from the natural materials. plastic raincoats, for example, are waterproof and keep there shape because of synthetic materials.
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How many moles of oxygen are needed to react with 87 grams of aluminum
labwork [276]

Answer:

2.4 moles of oxygen are needed to react with 87 g of aluminium.

Explanation:

Chemical equation:

4Al(s)  + 3O₂(l)   → 2AlO₃(s)

Given data:

Mass of aluminium = 87 g

Moles of oxygen needed = ?

Solution:

Moles of aluminium:

Number of moles of aluminium= Mass/ molar mass

Number of moles of aluminium= 87 g/ 27 g/mol

Number of moles of aluminium= 3.2 mol

Now we will compare the moles of aluminium with oxygen.

                              Al         :         O₂

                               4          :         3

                               3.2       :         3/4×3.2 = 2.4 mol

2.4 moles of oxygen are needed to react with 87 g of aluminium.

5 0
2 years ago
which structures are found in eukaryotic cells a.chloroplast b. membrane bound organelles c. mitochondria d. nucleus e. pili
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Is it asking for multiple answers? 
If not the nucleus is one organelle found in the <span>eukaryotic.
Hope This Helps :)</span>
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When there is a chemical reaction between hydrochloric acid and potassium hydroxide. Which substances are the reactants? Which s
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Explanation:

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The answer is Metalloids!
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Predict which molecule will show a similar relationship between its heat of fusion and its heat of vaporization that water does.
MrMuchimi

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d

Explanation:

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