Calculate the value of E^circ and Delta G^circ for the following reaction. 2Fe^2+(aq)+Br_(2)(aq)leftharpoons 2Fe^3+(aq)+2Br^-(aq) K=4.85times 10^10
Hybrid orbitals can be occupied by electrons in isolated atoms all have the same shapes and energies when formed around a single central atom have similar shapes to s, p, and d orbitals in isolated atoms create sigma and and n bonds pi
Valence bond theory describes covalent bonds as the overlap of half-filled orbitals with electron pairs localized between two bonded atoms uses a combination of atomic orbitals to create molecular orbitals with electrons delocalized throughout the entire molecule creates bonding and anti -bonding interactions based on which orbitals are filled correctly predicts paramagnetism in molecules
Question 22 (8 points) Match each orbital type with the maximum number of orbitals possible: square porbital square d orbital square forbital square s orbital 1. 1 2. 3 3. 7 4. 5 5. 9
Match each process with whether it is endothermic or exothermic: square A candle flame 2 square The freezing of water square v The combustion of butane square v Photosynthesis square pack used for injuries The chemical reaction in a cold square The vaporization of rubbing alcohol 1. Endothermic 2. Exothermic
Rank the types of intermolecular forces below from weakest (1) to strongest (4) Answer Ion-lon Interactions Answer Dispersion Forces Answer Dipole-Dipole Interactions Answer H-Bonding
For the reaction: P_(4)(s)+3H_(2)O(l)leftharpoons 2PH_(3)(g)+P_(2)O_(3)(g) At equilibrium, the reaction contains concentrations of: P_(4)=1.20M H_(2)O=4.50M PH_(3)=3.50M P_(2)O_(3)=1.50M Determine the value of the equilibrium constant K Answer
Which is an lonic solid? Multiple Choice KCI Cu SiO_(2) rubber
A gaseous form of any substance that is solid or liquid when at normal room temperature is known as a/an: gas mist vapor fume
Based on the activity series provided, which reactants will form products? Fgt Clgt Brgt I Cu_(2)+Br_(2)arrow Cl_(2)+AlF_(3)arrow Br_(2)+NaClarrow CuF_(2)+I_(2)arrow
22. When sugar is mixed with water equilibrium is reached when molecules of sugar stop moving the dissolved sugar molecules are evenly distributed throughout the
For which of the properties would aluminum have a greater value than gallium? 1. Atomic radius 2. Ionic radius 3. Electronegativity 4. Ionization energy
1A. Which of the following is most likely a significant cause of the general trend indicated by the graph? A. Reduction of ozone concentration in the upper atmosphere B. Reduction in size of polar ice caps C. Increase in energy output of the sun D. Increase in evaporation of ocean water E. Increase in consumption of fossil fuels 1B. Based on the results of the graph, which oceanic changes will be observed? A. pH will decrease, but the ocean will remain basic B. pH will increase and the ocean will become more basic C. pH will decrease and the ocean will become acidic D. pH will not significantly change 2A. When "strong," these dissociate completely in solution. A. Acid B. Base C. Both 2B. Is a proton-donor when dissolved in solution. A. Acid B. Base C. Both 2C. A solution with a pH greater than 7, up to 14. A. Acid B. Base C. Both 2D. A solution that contains more hydronium ions $(H3O+)$ than hydroxide ions $(OH-).$ A. Acid B. Base C. Both
Question 7 Match the definition with the correct term about the atom in relation to the periodic table. number of protons in the nucleus of an $\square $ atom [Choose] [Choose] total number of protons and neutrons in mass number the nucleus of an atom atomic mass atomic number $\square $ weighted, average mass of all isotopes of a naturally occurring element 1 pts
Properly identify the following ions (some answers will be used twice and some answers will not be used at all) magnesium $\square $ phosphate $\square $ ammonium $\square $ chloride $\square $ iron (III) $\square $ perchlorate $\square $
have gone into the field to take water samples from lakes in your town. note the following observations: Lake A contained many fish swimming in its waters. Lake B had very few fish swimming in its waters, and a few dead fish floating on the water. u return to your lab and take pH readings for each mple. Think about how acids and bases would affect the water quality in the two lakes. Which set of pH data would you expect to see based on your observations? Lake A: $pH=4.5$ Lake B: $pH=7.5$ Lake A: $pH=8.3$ Lake B: $pH=3.7$ Lake A: $pH=6.6$ Lake B: $pH=6.8$ Lake A: $pH=10.2$ Lake B: $pH=1.7$
A buffer consists of a weak acid and its conjugate hase in the same solution. Match the weak acid-conjugate base pairs that could be used to make a buffer. (Carvat does not show subscripts HCOOH $\square $ [Choose] $HC2H3O2$ $\square $ : HCN [Choose] H2O $NaCOOH$ $NaC2H3O2$ $NaOH$ $HCl$ $HaCN$ Question 9 aspts
${}_{2}^{4}He$ How many protons does He have? a b b C 2 d 6
Student B: At the beginning of the reaction the rate of the forward reaction was higher than the rate of the reverse reaction: ammonia and water were turning into ammonium hydroxide. But now, the rate of the reverse reaction is higher. Which student has the most accurate answer? Choose 1 answer: A Student A B Student B C Both students' answers are correct.
The number of atoms in a mole of something remains the same, but the mass of a mole depends on how many atoms you have the average atomic mass of the elements
