Chemistry Homework Help: Answers & Questions Page 75

• What is the equilibrium constant for the weak acid KHP?

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• What is the element with symbol Na?

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• Why is carbon important in the chemistry of life?

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• What is the electron configuration, orbital diagram, and noble gas notation of potassium?

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• What is the difference between Arrhenius, Bronsted-Lowry and Lewis acids and bases? How can you tell the difference?

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• What is the empirical formula for magnesium hydroxide (milk of magnesia)?

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• What is the difference between an isotope and a radioisotope?

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• What is the mass of 20.0 mL of nitrogen gas?

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• Why is rate law important?

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• 2-methylheptane , octane and 2,2,4-trimethylpentane in order of increasing boiling point?

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• On the pH scale, which numbers indicate a basic solution? An acidic solution? Why?

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• Why do we use the disodium salt of EDTA but not its tetrasodium salt in complexometric titration?

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• Why does NH3 act as Lewis base?

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• How can I write a noble gas shorthand?

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• What does it mean if a solid is malleable?

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• What is the electron configuration for oxygen?

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• Why is the enthalpy of formation of oxygen zero?

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• What is the molarity of glacial acetic acid (CH3COOH, Mr = 60.05g/mol) at 25 degrees C given that the density of acetic acid at that temperature is 1.049g/mL?

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• On the Celsius scale, at what temperature does water boil?

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• How does one find the number of atoms of each element in K3PO4?

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• When sodium acetate is added to acetic acid, the degree of dissociation of acetic acid....?

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• What are atoms?

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• What is the thermochemical equation for the combustion of benzene?

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• If I have a chart that claims that the Atomic radius of Rubidium is 248 picometers cubed, how can I calculate how many Rubidium atoms span the length of 1.00 centimeter (Assume that the Rubidium atoms are touching each other) ?

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• How can you find the ionic charges of elements by looking at the periodic table?

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• Consider butter (density=0.860g/ml) and sand (density=2.28g/ml). If 1.00ml of butter were mixed with 1.00ml of sand and mixed as thoroughly as possible, what would be the density of the resulting mixture?

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• What percent composition of glucose is carbon?

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• How did Robert Millikan's oil drop experiment change scientists' view of the atom?

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• What is the formula for molar heat of solution?

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• How do you tell the difference between a hydroxyl group and an alcohol group?

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• Write a balanced equation for the precipitation reaction that occurs when aqueous solutions of iron(III) bromide and potassium phosphate are combined?

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• Why does crystallization separate mixtures?

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• What are the three states of matter?

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• Convert 17 miles to kilometers if 1 inch = 2.54 cm ?

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• What is the mass of hydrogen in 49.2 g ammonium hydrogen phosphite?

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• ##"Z"^-## is a weak base. An aqueous solution prepared by dissolving 0.350 mol of ##"NaZ"## in sufficient water to yield 1.0 L of solution has a pH of 8.93 at 25.0 °C. What is the ##K_"b"## of ##"Z"^-##?

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• Why are alkenes and alkynes called unsaturated compounds?

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• What is the conjugate acid-base relationship of (H2PO4)- and (HPO4)-?

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• Why is ammonia hydrophilic?

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• A solution is prepared by adding 2 grams of substance a to 18 grams of water. How do you calculate the mass percent of the solute?

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• How are hydrogen bonds different from covalent and ionic bonds?

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• I am the head of the carbon family known as the "basis of life##? What am I?

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• Lewis dot structure and vesper shape for Hydronium?

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• The vapor pressure of water at 20 C is 17.5mmHg. What is the vapor pressure of water over a solution prepared from 200g of sucrose (##C_12H_22O_11##) and 112.3 g of water?

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• How to find extrapolated temperature?

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• What is the difference between vinylic and aryl halide?

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• What is an example of entropy from everyday life?

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• How do you write the Chemical Symbols of elements?

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• Why is solvation considered a surface phenomenon?

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• What is the ionic bond formation of NaCl?

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