Sample Quizzes are designed to give you an idea of the types of questions you can expect.  Quiz numbers may not exactly agree with currently assigned material, so you may need to examine several quizzes to see the ones that cover the material we are now covering.

Quiz #5

1. With an average atomic mass of 1.008 and 12.011 amu for hydrogen (H) and carbon (C), respectively, calculate the mass, in amu, of each of the following samples:

455 atoms of hydrogen

455 atoms of carbon

2. How many grams are present if you have 6.02x10²³ atoms of oxygen and silicon?

O ____________________________ Si ________________________________

3. What is the molar mass of:

CH₄ ____________________________

AgI ____________________________

CO₂ ____________________________

Potassium sulfate ____________________________

Sulfur trioxide ____________________________

4. Calculate the number of moles for each of the following compounds:

49.2 g sulfur trioxide

42.5 g phenol (C₆H₆O)

0.115 g NaOH

5. Calculate the number of grams in each of the following:

1.27 moles CO₂

1.50 moles water

0.0055 moles sulfuric acid (H₂SO₄)

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