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sweet [91]
2 years ago
11

Which of the following combination of elements would result in covalent compound? * W X Y Z Vand X Wand Z Y and Z Wand y​

Chemistry
1 answer:
TEA [102]2 years ago
4 0

Answer:

C. Y & Z

Explanation:

V, W are imaginary metals here because their valence electrons are typically less than 4. X, Y, Z are non-metals and have higher valence electrons. Here, if V or W bind with X, Y, or Z we make ionic bond (because metal + non metal = ionic). But, if X binds with Y or Z or any combinations of any two of the three non-metals results in covalent bond (non metal + non metal = covalent).

Thus, Y and Z make covalent.

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<u>Given:</u>

Mass of solvent water = 4.50 kg

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<u>To determine:</u>

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<u>Explanation:</u>

The freezing point depression ΔTf is related to the molality m through the constant kf, as follows:

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11.0 = 1.86 * moles of methanol/4.50

moles of methanol = 26.613 moles

Ans: Thus around 26.6 moles of methanol should be added to 4.50 kg of water.



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