Which atom(s) in the acetic acid (CH3COOH, shown below) is/are sp3 hybridized as identified with the bolded/larger atom(s)?  

Which microscopic representation best represents a homogeneous mixture?

For the oxidation of iron to form iron(III) oxide: 4Fe(s) + 3O2(g) → 2Fe2O3(s) ΔSo = –549.73 J/K at 298 K The enthalpy of formation of Fe2O3(s) is –824.2 kJ/mol. What is the standard change in Gibbs free energy for this reaction at 298 K?  

For the reaction of: CH3NC(g) ⇌ CH3CN(g)   Kc = 11 What is the equilibrium concentration of CH3CN if the flask initially contains only 0.56 M CH3CN?

Which numerical process will determine the mass (in grams) of carbon in 1.312 mol of acetaminophen (C8H9NO2)?  The molar mass of acetaminophen is 151.18 g/mol.

In the compound (NH4)2S2O3, which element is present in the smallest percent by mass?

Give the correct name for FePO4.

Of the substances below, which will hydrogen bond with water?  

How much time (in seconds) is needed to deposit 0.0125 g of chromium from a solution of Cr(NO3)3 with a current of 1.50 A? The molar mass of chromium is 52.00 g/mol.  

What isotope is depicted in the figure?