6. At the end of the lesson, the students are able to;
1. Define molar mass
2. Calculate the molar mass of a given compound
3. Recognize the importance of molar mass in daily life.
15. Direction: Using a periodic table, find the atomic
mass of a given element.
Elements Symbols Atomic Mass
C 12.011 amu
N 14.007 amu
O 15.999 amu
Al 26.982 amu
10.811 amu
B
17. 1. The atomic mass of Ca is 40.08 amu and the
molar mass of Ca is 40.08 g/mol.
2. The atomic mass of Bromine is 79.90 amu and
the molar mass is 79.90 g/mol.
22. Direction: Calculate the molar mass of the
following compounds.
Compound Chemical formula Molar Mass
(g/mol)
1. Water H2O
2. Carbon
tetrachloride
CCl4
3. Hydrochloric acid HCl
4. Ammonia NH3
5. Phosphoric acid H3PO4
6. Sulfuric acid H SO
18.015 g/mol
153.811 g/mol
36.458 g/mol
17.031 g/mol
97.994 g/mol
98.072 g/mol
23.
24. - is the mass (in grams) of one mole of a substance.
Using the atomic mass of an element and
multiplying it by the conversion factor grams per
mole (g/mol), you can calculate the molar mass of
that element.
25. - To calculate the molar mass of an element,
multiply the relative atomic mass by the molar
mass constant (1 g/mol).
26. - To calculate the molar mass of a compound, find
the chemical formula, the relative atomic mass of
each element, Calculate the molar mass of each
element and add the molar masses of each
element in the compound.
32. 1. In what ways can the concept of molar mass be applied in daily
life?
2. Why is it important to understand the molar mass when
working with chemical quantities?
3. How might understanding the molar mass of table salt, table
sugar, and vinegar contribute to being mindful of health
considerations?
33.
34. 1. What is the molar mass of sodium carbonate, Na2CO3?
2. What is the molar mass of Ammonium sulfate, (NH4)2SO4?
3. What is the molar mass of Calcium hydroxide, Ca(OH)2?
4. What is the molar mass of Aluminum sulfate, Al2(SO4)3?
5. What is the molar mass of silver nitrate, AgNO3
35.
36. 1. The atomic mass of nitrogen is ________, and its molar is
_________.
2. The boron element has a molar mass of 18. 81 amu, its atomic
mass will be _________.
3. The atomic mass of helium is 4.00 amu, what is the molar
mass? _________.
4. The atomic mass of neon is ______ and its molar mass is
_________.
5. The carbon elements have an atomic mass of ______ and a
numerically equal molar mass of ________.
