Chem 210

E What are the expected H-C-H bond angles in the methyl anion, H3C- ? A)90° B)120° C)109.5° D)180° E)105° D Which of the following hybrid orbitals has the lowest energy? A)sp3 on C B)sp2 on N C)sp2 on O D)sp on O E)sp on C C What is the formal charge on titanium in the compound below? A)0 B)+1 C)-1 D)+2 E)-2 D What is the hybridization of nitrogen atoms, I, II, and III, in the guanidinium cation, 1? (a) sp sp sp (b) sp2 sp3 sp3 (c) sp3 sp3 sp3 (d) s...

How does Volume Decrease Affect Equilibrium? Equilibrium will shift toward the side with the fewest gas molecules. How does Volume Increase affect Equilibrium? Equilibrium will shift the reaction left How will an increase in temperature affect the equilibrium of a solution with a -delta H? Reaction is Exothermic so the reaction will shift left How will an increase in temperature affect the equilibrium of a solution with a +delta H? Reaction is Endothermic so the reaction...

What consists of a small, positively charged nucleus surrounded by electrons? an atom What does a nucleus consist of? protons and neutrons Atomic number? the number of protons in the nucleus Mass number? the total number of protons and neutrons in the nucleus Isotopes? atoms of the same element that have the same atomic number (protons) but different mass numbers (neutrons) How to find average atomic mass? natural % abundance x mass (amu),of each isotope,...

matter anything with a mass and takes up space (volume) states of matter solid, liquid, gas solid (s) rigid, hard shape, definite volume liquid (l) fluid, takes shape of container and definite volume (molecules have interactions-intermolecular forces) gas (g) fills up container and volume is defined by volume of container (molecules are very far apart so no interaction) properties of matter physical and chemical properties physical property a prop...

What is ground state electron configuration of Co? [Ar]3d^9 [Ar]4s^1 3d^8 [Ar]4s^2 3d^7 [Ar]4s^2 4p^6 4d^1 [Ar]4s^2 3d^7 molybdenum has an anomalous electron configuration. using the shorthand notation for electron configurations, write the electron configuration A) [kr]5s 4d^6 B) [kr]5s 4d^0 5p^6 C) [kr]5s^1 4d^5 D) [kr]5s^2 4d^4 C) [kr]5s^1 4d^5 the symbol [Kr] represents a) 4s^2 4p^6 b) 1s^2 2s^2 2p^6 3s^6 4s^2 4p^6 c) 1s^2 2s^2 2p^6 3s^6 4s^2 3d^10 4p^6 D)1s^2 2s^...

sp Hybridization 2 SP + 2 π orbital Linear geometry at carbon sp² Hybridization 3 SP + 1 π orbital Trigonal planar geometry at carbon sp³ Hybridization 4 SP orbitals Tetrahedral geometry Antibonding MOs Destructive interference waves created by high energy electrons in MO models (Node is always present in antibonds) Bonding MOs Constructive interference waves created by lower energy electrons in MO models (No nodes, but beware of node-like low-probability ...

If the fuel efficiency of an automobile is 22 miles per gallon, what is its fuel efficiency in Kilometers per liter? ( 1Km= 0.621 mile, 1.00 L=1.057 quarts and 4 quarts = 1 gallon) 9.4 Km/L *What is the correct answer to the following expression: (49.1 - 42.61 ) x 13.1? 85 An intensive property of a substance is independent of amount. True Lithium has two stable isotopes with masses of 6.01512 amu and 7.01600 amu. The average atomic mass of Li is 6.941 amu. What is the p...

Which one of the following is not a redox reaction? Al(OH)4-(aq) + 4H+(aq) ® Al3+(aq) + 4H2O(l) Consider the reaction CuO(s) + H2(g) ® Cu(s) + H2O(l) In this reaction, which substances are the oxidant (oxidizing agent) and reductant (reducing agent), respectively? CuO and H2 When the following redox equation is balanced with smallest whole number coefficients, the coefficient for nitrogen dioxide will be _____. I2(s) + HNO3(aq) ® HIO3(aq) + NO2(g) + H2O(l) 10 When t...

Select the correct conversion factor for each step in the following roadmap for a substance with a density of 1 g/mL. volume (L) ----> volume (mL) ----> mass (g) x 1000mL / 1L x 1g / 1mL Label each step in the Scientific Method and then place the step in the correct order 1. Observations: Natural phenomena and measured events; can be stated as a natural law if universally consistent. 2. Hypothesis: Tentative proposal that explains observations. 3. Experiment: Procedure to te...