A 2.714 gram sample of a hydrate of sodium carbonate is placed in a test tube and heated until the mass is constant. If the mass of the dry sodium
carbonate is 1.006 grams. What was the mass of water driven off and what
was the percentage of water in the hydrate?

Explanation:

Hello!

In this case, since the total mass of the sample is 2.714 g and the mass of the anhydrous salt is 1.006 g; we infer the mass of water is:

Moreover, the percentage of water in the hydrate is calculated by dividing the mass of water by the mass of the total hydrate:

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answer: option (b) is the correct answer.

explanation:

a covalent bond is formed by sharing of electrons. whereas polarity arises due to difference in electronegativity of two atoms.

therefore, more is the electronegativity of an atom which combines with the titanium, more readily it will induce a partial positive and negative charge.

thus, out of the given options fluorine is most electronegative and has an incomplete octet. therefore, it will readily combine with titanium to share the electrons and complete its octet.