Which bond is the least polar? H-O H-Cl H-B H-F H-N
Which of the following molecules is NOT capable of hydrogen bonding? Ammonia (NH3) Water (H2O) Hydrogen fluoride (HF) Methane (CH4)
Provide the TUPAC name for the following compound: CH_(3)CH_(2)CH(CH_(2)CH_(3))CH_(2)CH_(2)CH_(2)CH(CH_(3))_(2)
How many maxima would you expect to find in the radial probability function for the 6s orbital of the hydrogen atom? Express the number of maxima as an integer.
Which of the following is a true statement? All chiral molecules possess a plane of symmetry. All achiral molecules are meso. All molecules which possess a single chirality center of the S configuration are levorotatory. A mixture of achiral compounds will be optically inactive. All molecules which possess two or more chirality centers will be chiral
A total of 24 valence electrons can be used in the Lewis structure for CO_(3)^2- True False
Alcohol strength refers to the __ in a beverage. Carbonation Type of mixer Concentration of alcohol Hops and grain
A double displacement reaction can generate products, including a precipitate, a gas, or a salt and water. True False
Type the correct coefficient for each reactant and product. 1) Balance the chemical equation for the square Na_(2)CO_(3)(aq)+square H_(2)SO_(4)(aq)arrow square CO_(2)(g)+square H_(2)O(l)+square Na_(2)SO_(3)(aq) 2) Balance the chemical equation for the reaction of aqueous sodium hydroxide and sulfuric acid. square NaOH(aq)+square H_(2)SO_(4)(aq)arrow square H_(2)O(l)+square Na_(2)SO_(4)(aq)
A solution is made by dissolving 42.3 g of potassium hydroxide in 329 g of water . What is the molality of the solution? KOH:56.11g/mol () m KOH
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
