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Welcome to
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Todays excruciating topic.
AP Chem Review Early chapters to Gas Laws
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PowerPoint Jeopardy
AP Chem Level 1
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Gases 100 Question Name 4 different units of gas
pressure 1
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Gases 100 Answer bar, atm, mm Hg, Pa
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Gases 200 Question A balloon with a volume of
8.73 L contains 0.321 moles of helium gas. What
is the density of the gas?
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Gases 200 Answer 0.147 g/L
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Gases 300 Question Place the following units of
pressure in order from lowest to highest
pressure 1 atm, 1 Pa, 1 mm Hg, 1 bar
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Gases 300 Answer 1 Pa lt 1 mm Hg lt 1 bar lt 1 atm
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Gases 400 Question Avogadro's law states that
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Gases 400 Answer equal volumes of all gases at
the same pressure and temperature contain an
equal number of moles.
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Gases 500 Question A balloon is filled with
oxygen gas to a volume of 1.75 L at 36ºC. The
balloon is then heated to 72ºC. What is the
volume of the heated balloon?
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Gases 500 Answer 1.95 L
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Aqueous Reactions 100 Question The molarity of a
solution is defined as
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Aqueous Reactions 100 Answer the moles of solute
per liter of solution.
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Aqueous Reactions 200 Question How do you
prepare 1.00 L of an aqueous solution of 0.500 M
NaOH?
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Aqueous Reactions 200 Answer Place 20.0 g
NaOH(s) in a flask and add 1.00 L of water.
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Aqueous Reactions 300 Question If 17 g MgCl2 is
dissolved in 5.0 L of water, what is the chloride
ion molarity in the solution?
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Aqueous Reactions 300 Answer 0.071 M
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Aqueous Reactions 400 Question How do you set
up a calculation for the number of moles of Al3
in 125 mL of 0.234 M Al(NO3)3?
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Aqueous Reactions 400 Answer
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Aqueous Reactions 500 Question What mass of
potassium nitrate is present in 71.3 mL of 0.250
M KNO3?
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Aqueous Reactions 500 Answer 1.80 g
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Stoichiometry Part1, 100 Question An atomic mass
unit (amu) is defined as
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Stoichiometry Part1, 100 Answer 1/12 the mass of
1 carbon-12 atom.
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Stoichiometry Part1, 200 Question Gallium has an
atomic mass of 69.7 amu. In a typical sample,
60.4 of Ga exists as Ga-69 (68.9257 amu). What
is the identity and the atomic mass of the other
isotope?
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Stoichiometry Part1, 200 Answer Ga-71, or more
properly, , 70.9 amu
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• Stoichiometry Part1, 300
• Question The average molar mass of lithium is
  6.941. A sample of lithium consists of two
  isotopes with masses of 6.01512 amu (Li-6) and
  7.01600 amu. (Li-7). Determine the percent
  abundance of each isotope.
• 7.49 Li-6 and 92.51 Li-7
• 8.45 Li-6 and 91.55 Li-7
• 12.49 Li-6 and 87.51 Li-7
• 91.55 Li-6 and 8.45 Li-7
• 92.51 Li-6 and 7.49 Li-7

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Stoichiometry Part1, 300 Answer a
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• Stoichiometry Part1, 400
• Question Which one of the following is the most
  effective method of determining isotopic ratios
  of elements?
• distillation
• filtration
• chromatography
• absorption spectroscopy
• mass spectrometry

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Stoichiometry Part1, 400 Answer e
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• Stoichiometry Part 1, 500
• Question The molar mass of nitrogen (N2) is 28.0
  g/mole. What is the mass of a single nitrogen
  atom?
• 2.32 x 10-23 g
• 4.65 x 10-23 g
• 9.30 x 10-23 g
• 4.30 x 10-22 g
• 8.43 x 10-22 g

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Stoichiometry, Part 1, 500 Answer a
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• Atoms, molecules ions 100
• Question All of the following are postulates of
  Dalton's atomic theory EXCEPT
• in a given compound, relative numbers of atoms of
  each kind are definite and constant.
• elements are composed of atoms.
• no atom is changed into another element in an
  ordinary chemical reaction.
• compounds are formed when two or more atoms
  combine.
• atoms are composed of electrons, protons, and
  neutrons.

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Atoms, molecules ions 100 Answer e
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• Atoms, molecules ions 100
• Question
• All of the following statements are true EXCEPT
• a proton carries a 1 charge and an electron
  carries a -1 charge.
• the nucleus of an atom has a negative charge.
• an alpha particle is a helium atom minus its
  electrons.
• a neutron is an uncharged particle with a mass
  slightly greater than a proton.
• more than 99.9 of an atom's mass is concentrated
  in the nucleus.

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Atoms, molecules ions 200 Answer b
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• Atoms, molecules ions 300
• Question
• All of the following statements are true EXCEPT
• all atoms of a given element have the same mass
  number.
• for any neutral element, the number of electrons
  is equal to the number of protons.
• the mass number is the sum of the number of
  protons and neutrons.
• isotopes of atoms contain the same number of
  protons but a different number of neutrons.
• the atomic number equals the number of protons in
  an atom.

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Atoms, molecules ions 300 Answer a
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Atoms, molecules ions 400 Question How do you
write the nuclear symbol for oxygen-15, a
radioactive element used in positron emission
tomography?
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Atoms, molecules ions 400 Answer
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• Atoms, molecules ions 500
• Question
• Which description most accurately describes
  neptunium-239?
• mass number 93, atomic number 239
• mass number 93, number of neutrons 146
• mass number 146, atomic number 93
• number of protons 93, number of neutrons 146
• number of protons 93, atomic number 239

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Atoms, molecules ions 500 Question 5 Answer here
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• Matter measurement 100
• Question Which one of the following statements
  concerning matter is correct?
• A gas has a fixed volume but not a rigid shape.
• A liquid has a fixed volume and a rigid shape.
• A liquid takes on both the volume and the shape
  of its container.
• A solid has a fixed volume and a rigid shape.
• Both answers b and d are correct.

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Matter measurement 100 Answer d
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• Matter measurement 200
• Question All of the following statements
  concerning water (H2O) are false EXCEPT
• the percentage of oxygen in H2O is independent of
  where the sample is obtained.
• H2O is a heterogeneous mixture.
• H2O is a homogeneous mixture.
• H2O is an element.
• H2O has properties similar to those of the
  elements hydrogen and oxygen.

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Matter measurement 200 Answer a
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• Matter measurement 300
• Question Which term best describes table salt
  (NaCl) at room temperature?
• gas
• element
• compound
• homogeneous mixture
• heterogeneous mixture

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Matter measurement 300 Answer c
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• Matter measurement 400
• Question Which term best describes rocks, such
  as granite or marble?
• element
• molecule
• distillation
• homogeneous mixture
• heterogeneous mixture

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Matter measurement 400 Answer e
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Matter measurement 500 Question Write the
symbol for the element that gives the yellow
color to the light in certain street lamps.
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Matter measurement 500 Answer Na
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