Determine the molar mass of the following elements:
a. manganese, Mn c. arsenic, As
b. cadmium, Cd d. strontium, Sr
a. The molar mass of manganese (Mn) is 54.93804 g/mol.
b. The molar mass of cadmium (Cd) is 112.411 g/mol.
c. The molar mass of arsenic (As) is 74.92160 g/mol.
d. The molar mass of strontium (Sr) is 87.62 g/mol.
To determine the molar mass of an element, you need to know the atomic mass of that element. Atomic mass is the weighted average mass of all the naturally occurring isotopes of an element. It is usually given in atomic mass units (amu) and can be found on the periodic table.
a. For manganese, Mn, you can find its atomic mass on the periodic table. It is approximately 54.938 amu.
b. For cadmium, Cd, you can also find its atomic mass on the periodic table. It is approximately 112.411 amu.
c. For arsenic, As, again, you can refer to the periodic table. Its atomic mass is approximately 74.922 amu.
d. Finally, for strontium, Sr, you can find its atomic mass on the periodic table. It is approximately 87.62 amu.