59. Death results if blood pH reaches 6.8. Assuming blood behaves like water, would death result if the blood hydronium ion concentration were 8.35 × 10⁻⁷ M?

58. During the Apollo 13 mission, rising carbon dioxide levels in the spacecraft threatened the astronauts. Blood pH is normally held at 7.4 by this set of COUPLED equilibria: CO₂(g, air) ⇌ CO₂(g, blood)CO₂(g, blood) + H₂O ⇌ H₂CO₃(aq)H₂CO₃(aq) + H₂O ⇌ H₃O⁺(aq) + HCO₃⁻(aq) If the CO₂(g) level in the air supply increased, how would blood pH be affected?

How many electrons are required to reduce a SINGLE Cr atom in dichromate (Cr₂O₇²⁻) to chromium(III)?

36. If the total pressure in a closed vessel (5 L total volume) is 8 atm, which expression represents the number of moles of gas in the vessel at 25 °C?

Rank the following bonds and intermolecular forces in order of INCREASING strength (weakest first and strongest last): covalent bond, London dispersion forces, dipole-dipole forces, and hydrogen bonds

Which of the following elements has the LARGEST atomic radius?

The number of UNPAIRED electrons in the ground state electron configuration of a carbon atom is

The most favored Lewis structure of N₂O has how many lone pair(s) of electrons around the oxygen?

52. Acetic acid, CH₃CO₂H, is a weak acid (Ka = 1.8 × 10⁻⁵). Trifluoroacetic acid, CF₃CO₂H, made by replacing the three non-dissociable H atoms of the methyl group with F atoms, is a borderline strong acid (Ka between 10⁻¹ and 10⁻²). Which statement best explains this several-thousand-fold increase in Ka?

What is the correct elemental symbol and charge for an ion that has 12 protons and 10 electrons?