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Charra [1.4K]
4 years ago
10

Which statement about polymers is true? A. Polymers are substances that have relatively large molecules. B. Oil and gas are the

starting materials for making all polymers. C. Fabrics such as cotton and silk are synthetic polymers. D. All polymers are obtained from living organisms.
Chemistry
1 answer:
igor_vitrenko [27]4 years ago
3 0

Answer:

A.) Polymers are substances that have relatively large molecules

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Answer : The mole fraction of NaCl in a mixture is, 0.360

Explanation : Given,

Moles of NaCl = 7.21 mole

Moles of KCl = 9.37 mole

Moles of LiCl = 3.42 mole

Now we have to calculate the mole fraction of NaCl.

\text{Mole fraction of }NaCl=\frac{\text{Moles of }NaCl}{\text{Moles of }NaCl+\text{Moles of }KCl+\text{Moles of }LiCl}

Now put all the given values in this formula, we get:

\text{Mole fraction of }NaCl=\frac{7.21}{7.21+9.37+3.42}=0.360

Therefore, the mole fraction of NaCl in a mixture is, 0.360

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kirill [66]

Answer:

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