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Chapter 10 Test

Last updated over 3 years ago
19 questions
2

All of the following are equal to Avogadro's number EXCEPT ____.

2

The lowest whole-number ratio of the elements in a compound is called the ____.

2

1 mole CaClâ‚‚ = 6.02 x1023 ______

2

1 mole Nâ‚‚ = 6.02 x1023 ______

2

1 mole Cu = 6.02 x1023 ______

2

Law of conservation of mass states...

2

Molar Mass is

2

What does avogadro's number tell us?

2

What information might be most useful for me to find molar mass?

2

What is Avogadro's number?

2

Avogadro's number of representative particles is equal to one ____.

2

What is the molar mass of methane(CH4)?

6

Given 6.809 grams of N2O5 how many moles are in the sample?

6

Given 81.20 grams of CaF2 how many formula units in the sample?

6

Given 5.012x1024 atoms of silicon, how many grams of silicon are in the sample?

6

The molecular formula for ethyl alcohol is C2H5OH, what is the percent composition of hydrogen in ethyl alcohol?

6

What is the molar mass of acetic acid: HCH3COOH?

6

In CaBr2, what is the percent composition of bromine in the compound?

18

Match the corresponding item with the correct category label.

  • Li2O
  • Al2O3
  • Ag
  • Sn
  • CaBr2
  • FeI2
  • NH3
  • C
  • C2H5OH
  • atoms
  • molecules
  • formula units