The following reaction is an example of a(n) ___________ reaction.           CH4 + 2 O2 → CO2 + 2 H2O oxidation–reduction combination combustion

If solution A contains 6% NaCl in water and solution B contains 3% NaCl in water and the two solutions are separated by a selectively permeable membrane, which of the following will occur?

What is the pH of a solution with a [OH–] of 4.1 × 10–3 mol/L?

How many moles of silver nitrate, AgNO3 are in 9.2g of silver nitrate? Show the calculation.

A hot dog contains 151 kcal. How many joules of energy is this?

Which of the following equation correctly determines the formula mass of sodium sulfate (Na2SO4)?

Each of the following diagrams represents a reaction showing the activation energy. Which reaction has the fastest rate?

What is the [H3O+] in a solution that has a [OH–] of 3.2 × 10–4 mol/L?

Which of the following are conjugate acid-base pairs in the acid-base reaction between ethanamine (CH3CH2NH2) and water?           CH3CH2NH2 (aq) + H2O (l) ⇋ CH3CH2NH3+ (aq) + OH– (aq)    I. H2O and CH3CH2NH2 II.  H2O and OH– III. CH3CH2NH2 and CH3CH2NH3+ IV. CH3CH2NH3+ and OH–

A buffer solution contains H2CO3 and HCO3–, resulting in the equilibrium shown by the reaction below. According to this reaction and Le Châtelier’s principle, what happens when acid (H3O+) is added to this buffer solution?          H2CO3 + H2O ⇋ HCO3– + H3O+