CHEM 111 FA24 Exam 3

Is NH4+ a polar or nonpolar molecule?

What intermolecular forces are present in a pure solution of octane (C8H18)?

Breaking bonds releases energy.

Calculate the formal charge of phosphorus in a phosphate molecule.

What intermolecular forces are present in a solution of water (H2O) mixed with ethanol (C2H5OH)?

Calculate the percent by mass of hydrogen in phenol (C6H5OH).

Which of these formulas would have a radical in its Lewis structure?

What is the empirical formula of a compound that contains 67.9% C, 5.70% H, 26.4% N?

In which of these compounds would benzene (C6H6) be soluble?

What is the molecular geometry of H2O?

Select the molecule that has resonance structures.

Which of these molecules contains the longest bonds?

Rank the following molecules in order of increasing boiling point: CH2O, CH3COOH, CH4

Draw the Lewis structure for SF4. How many lone pairs are on the central atom?

What is the molecular formula of arachidonic acid (molar mass of 304.46 g/mol) if its empirical formula is C10H16O?

Which of these molecules contains the strongest bond?

What type of bond is indicated by the "A" arrow?

What is the electron geometry of the carbon atom in methanol (CH3OH)?

How many resonance structures exist for the sulfate molecule?

What is the hybridization of the central atom this molecule?

you're going to slay this exam!!!