A compound has an empirical formula of CzHs. What is true about this empirical formula? OA. It models the structure of the compound.
OB. It shows the ratio of elements in the compound.
OC. It gives the mass of each atom in the compound.
OD It indicates the number of atoms in the compound.
OE.
It describes only this one compound.

Which of the following statements is true about planck’s law

Often on a topographic map, every fifth contour line is darkened. what is this line called? a. key b.slope c.benchmark d. index contour

The boiling point of propanoic acid is higher than that of 1-butanol because: propanoic acid has a higher molecular weight than 1-butanol. propanoic acid is more soluble in water than 1-butanol. propanoic acid is a better hydrogen bond donor than 1-butanol. propanoic acid forms hydrogen bonded dimers and 1-butanol does not. 1-butanol forms hydrogen bonded dimers and propanoic acid does not.