Question

Please help me!! I don't remember and the teacher isn't here to explain
Use the periodic table to determine the molar mass of each of the following elements.
Potassium (K): g/mol
Osmium (Os): g/mol
Manganese (Mn): g/mol

Answer 1

Molar mass is mass od 1 mol of given substance. You can see it in Periodic table-left upper number at chemical symbol.
For K is 39,1g/mol.
For Os is 190,2 g/mol.
For Mn is 54,95 g/mol.

Answer 2

The molar mass is defined as the mass of 1 mole of the element, molecule or ion. The molar mass of Potassium, Osmium and Maganese are  39.1 g/mole, 190.2 g/mole, 54.95 g/mole respectively.

Molar Mass:

• It is defined as the mass of 1 mole of the element, molecule or ion.

• It is is measured in g/mole.

• 1 mole = $\rm \bold { 6.23 \times 10^2^3}$

To find the molar mass of elements 1st search for atomic mass of elements in periodic table. Write it as molar mass in g/mole.

Hence, we can conclude that the molar mass of Potassium, Osmium and Maganese are  39.1 g/mole, 190.2 g/mole, 54.95 g/mole respectively.

To know more about molar mass, refer to the link:

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