Chemistry Homework Help: Answers & Questions Page 64

• How are buffer solutions used?

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• What is the physical significance of the Planck's constant?

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• How does the value of an equilibrium constant relate to the relative quantities of reactants and products at equilibrium?

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• What does the term dual "nature of light" mean?

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• What is the atomic number of iron?

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• What is a mixture in chemistry?

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• What is the ground state electron configuration of the element germanium?

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• How do you convert Chloroform to Propyne?

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• The atomic mass of potassium is 39. If its atomic number is 19, how many neutrons are in each potassium atom?

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• How do enzymes affect rate of reactions?

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• Can you write a balanced nuclear equation for the alpha decay of Ra-226?

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• Where are electrons located?

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• Fe(NO3)3(aq)+HCl(aq)? write the equation and net ionic equation?

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• What is the nuclear equation for the alpha decay of Po210?

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• What is the isotope symbol of uranium- 238 and uranium-235?

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• What are some examples of Van der Waals forces?

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• How do you calculate the percent composition of each element in K2Cr2O7?

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• What are metal activity series?

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• On a mountaintop, it is observed that water boils at 90°C, not at 100°C as at sea level. Why does this phenomenon occur on the mountaintop?

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• What is a solvent?

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• Why can't we add a methyl group to to the first carbon atom while making an isomer of butane?

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• How many grams of methane gas, CH4 , occupy a volume of 2.00 L at 50.0°C, and 697 torr? (PV = nRT, R = 0.0821 L atm/ mole K)

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• Calculate the percent composition of lithium in ##"Li"_3"PO"_4##?

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• What is the half life equation?

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• What is the pKa of acetic acid?

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• What is the reaction and chemical equation when hydrogen peroxide is added to manganese dioxide?

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• What are metathesis reactions?

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• If the amount of mercury in a polluted lake is 0.4 micrograms Hg/mL, what is the total mass in kilograms of mercury in the lake? ( the lake has a surface area of 100 ##"mi"^2## and an average depth of 20 ft)

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• How do you calculate the ideal gas law constant?

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• Why is enthalpy an extensive property?

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• Why is the Lewis structure of ozone important?

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• What is the balanced equation for heptane (C7H16) burning in oxygen to make carbon dioxide and water?

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• According to the periodic table, how many elements are metalloids?

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• Where are reactive metals located on the periodic table?

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• What's the balanced equation for magnesium and hydrochloric acid?

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• Calculate the mass density of a pure sample of oxygen gas at a pressure of 1.0 atm, a volume of 7.8 L at 197.2C?

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• Why isn't carbon monoxide just called carbon oxide?

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• How do you calculate standard molar enthalpy of formation?

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• Technetium-99m the isotope notation is 98 TC 43. Is the atomic weight 98 amu?

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• How does stirring affect the rate of solution formation?

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• In what other ways can you make use of the concept on percentage composition?

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• What is the purpose of writing chemical equations?

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• How many molecules are in one mole of a molecular compound?

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• What is hyperconjugation?

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• Why is SnCl4 a Lewis acid?

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• Why are noble gases monatomic, if they are?

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• What does "trans" isomer mean in cyclohexane ring?

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• What is the trend for atomic radius down a group?

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• If the pH of healthy blood is 7.4, what is the hydrogen ion concentration?

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• What phase of matter is NaOH?

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