Which substance most likely has the highest boiling point?
2 answers:
Answer: The correct answer is calcium chloride , an ionic compound.
Explanation:
Ionic compounds are the compounds in which complete transfer of electrons takes place from one element to another. In these compounds, the forces of attraction between the particles is strong and hence, they have the highest boiling points.
Covalent compounds are the compounds in which sharing of electrons takes place between two elements forming a bond. There are two types of covalent compounds: Polar and Non-polar.
The forces of attraction between the particles is stronger in polar covalent compounds as compared to the no-polar covalent compounds. But, the forces of attraction between covalent compounds is less than the ionic compounds.
Hence, the order of increasing boiling points is given by:
Non-polar covalent < Polar covalent < Ionic
Therefore, the correct answer is calcium chloride , an ionic compound.
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Answer: The mole ratio of Zn to ZnO is 3: 3.
Explanation:
According to law of conservation of mass, mass can be neither be created nor be destroyed. The mass on reactant side must be equal to the mass on product side. Thus the atoms of each element on both side of the reaction must be same.
The balanced chemical reaction is:
Here 3 moles of Zn combine with 2 moles of to give 1 mole of
and 3 moles of
. Thus the mole ratio of Zn to ZnO is 3: 3.
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The given compound has 3 carbon atoms, so in 1 mole of that compound, there will be 3 moles of carbon atoms.
Mass of each mole of carbon atoms = 12 g
For 3 mole carbon atoms, it will be 12 × 3 = 36 grams
Answered by : ❝ AǫᴜᴀWɪᴢ ❞