what is the gram formula mass of Mg(C103)2?
help!
191.2068.
how did you get that answer ?
Mg(ClO3)2. You look up the atomic masses on the periodic table and add them.
Mg is approximately 24.3
Cl = 35.45 x 2= ?
O = 16 x 6 = ?
I go here and it adds them for me.
http://environmentalchemistry.com/yogi/reference/molar.html#Calculator
But not in an exam! It is worth doing the problems using data from a Periodic Table or a data table so that you are familiar with the RAM of some common elements. Using a Periodic Table also reinforces where the elements are in the Periodic Table.
To find the gram formula mass of Mg(C103)2, we need to calculate the sum of the masses of all the atoms in the compound.
Step 1: Determine the atomic masses
- The atomic mass of Mg (magnesium) is approximately 24.31 g/mol.
- The atomic mass of C (carbon) is approximately 12.01 g/mol.
- The atomic mass of O (oxygen) is approximately 16.00 g/mol.
Step 2: Identify the number of atoms
- There are 1 Mg atom, 2 Cl atoms, and 6 O atoms.
Step 3: Multiply the atomic masses by the number of atoms
Mg: 1 × 24.31 g/mol = 24.31 g/mol
C: 2 × 12.01 g/mol = 24.02 g/mol
O: 6 × 16.00 g/mol = 96.00 g/mol
Step 4: Sum up the masses
24.31 g/mol + 24.02 g/mol + 96.00 g/mol = 144.33 g/mol
Therefore, the gram formula mass of Mg(C103)2 is approximately 144.33 g/mol.