On the basis of bonding, which of the following is true about potassium chloride when compared to sucrose?
(points : 3)
potassium chloride has a higher boiling point than sucrose.
potassium chloride dissolves in water, but sucrose does not.
potassium chloride has a lower melting point than sucrose.
potassium chloride crystals are softer than sucrose crystals.

Potassium chloride dissolves in water, but sucrose does not

Step-by-step explanation:

Potassium chloride is an ionic compound whereas sucrose is a covalent compound. And ionic compounds being polar ,easily dissolve in polar solvents such as water whereas covalent compounds being non polar dissolve only in nonpolar solvents.

Ionic compounds are held together by strong electrostatic forces and thus have high melting and boiling points. Ionic compounds are arranged in crystal lattice and are hard.

whole numbers.

step-by-step explanation:

we are given the average monthly rainfall (in millimeters) model r(m) for the years 1900-2009 as a function of the month number m.

as we can see m is taken for the number of months for years 1900-2009.

we know that number of months can't be a negative number or decimal number or a fraction.

so, the number of months could be only positive whole numbers.

therefore, whole numbers is more appropriate for the domain of r.