Avogadro's Number

Avogadro's number, also known as Avogadro's constant, is a fundamental constant in chemistry that represents the number of atoms, molecules, or particles in one mole of a substance.

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Questions #: 8
Time: 5 minutes
Pass Score: 80.0%
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One mole of chlorine contains how many grams?

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Avogadro's Number

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Avogardo's number, and the mass of an element having 6.02•1023 atoms is called __________ of substances

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Fill in the missing gaps

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The mass of one water molecule is (1) times the mass of one hydrogen atom, since it contains (2) hydrogen atoms and one oxygen atom, the oxygen's atomic mass being (3).  The mole of water is therefore (4) grams.

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18
two
three
16
19
20
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Calculate the mass of a mole of sulfuric acid

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Use the periodic chart to calculate the mass of a mole of sulfuric acid (H2SO4)

Answer (1) grams

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How many molecules will a mole of sulfuric acid contain?

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How many molecules are in 44 grams of carbon dioxide?

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How many molecules are in 44 grams of carbon (CO2) dioxide?

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How many molecules are in 11 grams of carbon dioxide?

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How many molecules are in 11 grams of CO2 carbon dioxide?

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What is the mass (in grams) of one molecule of carbon dioxide?

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What is the mass (in grams) of one molecule of CO2 carbon dioxide?

Hint: There are 44 g in 6.02 • 1023

 

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0
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sin-1 cos-1 tan-1 π e
xy x3 x2 ex 10x
y√x 3√x √x ln log
( ) 1/x % n!
7 8 9 + MS
4 5 6 – M+
1 2 3 × M-
0 . EXP ÷ MR
± RND C = MC
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Year 10