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U8.4 Study Guide (Calculations with the Mole)

Quiz by Aaron Holley

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19 questions
Show answers
  • Q1

    A method of solving problems in which units are carried through all of the calculations is called ____.

    dimensional portal

    fractional mathematics

    dimensional analysis

    unit analysis

    30s
  • Q2

    Why do we use dimensional analysis in chemistry?

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    120s
  • Q3

    ________ are used in dimensional analysis, which are expressions of quantity in two different units.

    integers

    superscripts

    coefficients

    equalities

    30s
  • Q4

    Equalities are used to make ___________________, which are fractions in which the numerator and denominator are the same quantity expressed in two different units.

    superscripts

    integers

    coefficients

    equalities

    30s
  • Q5

    What are the temperature and pressure used when measuring the volume of gases?

    40\degreeF and 14.7 atm

    100\degreeC and 1 atm

    0\degreeC and 700 Torr

    0\degreeC and 1 atm

    30s
  • Q6

    What is the volume of one mole of a gas at standard temperature and pressure?  (Write your answer to one decimal place and be sure to include the unit.)

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    30s
  • Q7

    How many seconds are in 12.3 hours?  Type your final answer as a whole number.

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    300s
  • Q8

    How many milligrams are in 4.50 kilograms? (1 g = 1000 mg;  1 kg = 1000 g) Type your answer as a whole number.

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    300s
  • Q9

    You are working in a chemistry lab, and you need to convert from 16.3 moles of glucose to mass of glucose.  Which of the following is the correct conversion factor that will allow you to complete the calculation

    \frac{6.022\times10^{23}}{1\ mole}

    \frac{22.4\ L}{1\ mole}

    \frac{180.156\ g}{1\ mole}

    \frac{1\ mole}{180.156\ g}

    120s
  • Q10

    You need to determine the number of moles of a carbon dioxide gas that has a volume of  32.7 L Which of the following is the correct conversion factor that will allow you to complete the calculation

    \frac{44.01\ g}{22.4\ L}

    ​\frac{1\ mole}{22.4\ L}

    \frac{22.4\ L}{1\ mole}

    \frac{1\ mole}{44.01\ g}

    120s
  • Q11

    1.80 x 1021 formula units of sodium chloride is equal to ____ moles of NaCl.

    5.116 x 10-5 moles

    1.084 x 1045 moles

    0.00299 moles

    0.175 moles

    300s
  • Q12

    3.65 moles of hydrofluoric acid (HF) = ____ molecules of HF.

    2.20 x 1024 molecules

    4.40 x 1025 molecules

    6.06 x 10-24 molecules

    6.06 x 1022 molecules

    300s
  • Q13

    1.89 moles of PCl5 has a mass of ____ g.

    .00908 g

    393.57 g

    259.56 g

    2.37 x 1026 g

    300s
  • Q14

    Convert 128.76 g of copper(II) sulfate to moles.

    4.858 x 1023 mole

    0.807 mole

    0.577 mole

    20551 mole

    300s
  • Q15

    What is the volume of 3.77 moles of nitrous oxide (N2O) at standard temperature and pressure?

    0.168 L

    84.45 L

    165.93 L

    5.09 x 1025 L

    300s

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