Answers edited by Priya
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What is a reaction rate?
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Did Rutherford's gold foil experiment change the view of the atom?
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Question #c0638
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How does solubility change with temperature changes?
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How many moles of sodium hydroxide are needed to neutralize 1 mole of phosphoric acid?
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How is nuclear stability related to the neutron-proton ratio?
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What covalent bonds are in sulfamic acid and water?
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How can I classify metalloids?
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How many valence electrons does bromine have?
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Question #94985
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Is the source of the sun's energy nuclear fusion or nuclear fission?
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Does positron decay result in nuclear transmutation?
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Question #3c8f0
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What temperature scale does China use?
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A certain sample of gas has a volume of 0.452 L measured at 87°C and 0.620 atm. What is its volume at 1 atm and 0°C?
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Question #6b0c2
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How do oxidation numbers relate to electron configuration?
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How does the collision theory explain how chemical reactions occur?
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A sample of O2 under 2.00 atm occupies 500 ml at 25.0˚C. What temperature will be needed to produce a pressure of 4.00 atm?
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Question #2f835
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How does multigrade oil work?
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How do valence electrons form bonds?
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Question #f7c86
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What do you mean by the ground state of a system?
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Question #c5be6
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Question #fee47
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What is an example of a VSEPR model practice problem?
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Question #25b41
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Question #3e282
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If 100.0 g of a radioactive isotope that has a half life of 25 years, identify the amount of that isotope that will remain after 100 years?
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Why is the rate of reaction fastest at the beginning?
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How does temperature affect changes of state?
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What temperature scale does Australia use?
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What is osmolarity of body fluids?
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Does the Heisenberg uncertainty principle apply to cars and airplanes?
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How do covalent bonds dissolve in water?
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What is half-life?
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What sort of radiation can cause genetic mutations?
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If 500 mL of HCl gas at 300 K and 100 kPa dissolved in pure water requires 12.50 mL of the NaOH solution to neutralize in a titration experiment, what is the concentration of the NaOH solution?
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Calculate the number of joules given off when 32.0 grams of steam cools from 110.0 °C to ice at -40.0 °C.
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What covalent compound is N2S?
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How many bonding orbitals are in Silicon Tetraflouride, or #SiF_4#?
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The temperature measured in an experiment was #"64.9"^@"C"#. The theoretical temperature is #"55.0"^@"C"#. What is the percent error?
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What is the total gas pressure in a sealed flask that contains oxygen at a partial pressure of 0.41 atm and a water vapor at a partial pressure of 0.58 atm?
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What is the chemical equation for cesium + iodine ---> cesium iodide?
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Question #bc74d
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A sample of hydrogen has an initial temperature of 50.° C. When the
temperature is lowered to -5.0° C, the volume of hydrogen becomes
212 cm3. What was the initial volume of the hydrogen in dm3?
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Question #42ee6
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What is an example of a percent composition practice problem?
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What is a polyatomic ion?
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What's the mole number?
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How many atomic orbitals are there in a p subshell?
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How can the periodic table be used to predict the properties of the elements?
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Why are atomic masses of most of the elements fractional?
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How did Tycho Brahe and Kepler employ the scientific method?
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What is a formula that demonstrates the law of multiple proportions?
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What is the balanced equation for combustions of propane gas that yields carbon dioxide and water?
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How many grams of NaCl are produced when 80.0 grams of O2 are produced? 2 NaClO3 ---> 2 NaCl + 3 O2
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A sample of carbon is placed in a rigid 1.50 L flask. Dinitrogen monoxide is added and the flask heated to 800C. When the system reached equilibrium the partial pressure of the carbon dioxide is found to be 0.030 atm and the partial pressure of the dinitrogen monoxide to be 1.48 atm. What is the partial pressure of nitrogen in the mixture.
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What is a linear regression?
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How does counter-current mechanism in the Loop of Henle work?
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Question #f6476
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How can molarity and osmolarity be calculated from m/v?
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Is heat capacity larger for polymers?
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How is mass number related to isotopes?
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Question #d7f86
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How many hybrid orbitals are present in the molecule PCl5?
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How can I calculate the molecular weight of the empirical formula?
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What is the oxidation state of chromium in Cr(H2O)6 (3+)?
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Is CH3CO2H a dipole dipole?
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Question #14194
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What causes gas pressure (in terms of kinetic theory)?
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How are atomic spectra used?
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How does Boyle's law relate to breathing?
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Why does neutralization occur?
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What is an atom?
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How do you determine how much of the excess reactant is left over? Also, how do you determine how much MORE of the limiting reagent would you need to use up the excess?
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How do you find the molality of an unknown solution?
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In a double bond how many pi and sigma bonds are there?
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How does the ideal gas law differ from the combined gas law?
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How can a chemical change be sped up?
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How can atomic emission spectra be useful?
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Why are closed shells more stable?
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How can a galvanic cell become an electrolytic cell?
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How do you calculate the number of days required for 3/4 of a given amount of nuclide to decay if the half-life is 18 point 72 days?
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A sample of carbon is placed in a rigid 1.50 L flask. Dinitrogen monoxide is added and the flask heated to 800C. When the system reached equilibrium the partial pressure of the carbon dioxide is found to be 0.030 atm and the partial pressure of the dinitrogen monoxide to be 1.48 atm. What is the value of the equilibrium constant, Kp for the system at 800C?
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What does a buffer do in a solution?
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How can I calculate percent concentration by mass?
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What amount of ice must be added to 540.0 g of water at 25.0 °C to cool the water to 0.0 °C and have no ice?
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How does a galvanic cell differ from an electrolytic cell?
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What is linear mass density?
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Question #d7f4a
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Question #bb7b1
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Do relative osmolarities relate to water movement?
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How does ion size affect conductivity?
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How do you determine the correct subscripts in a chemical formula?
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What is a reaction rate constant?
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Why are all spontaneous processes not exothermic?
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What are the limitations of the octet rule?
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