Answer:
94%
Explanation:
Given:
Formula of tungsten carbide = WC
Unknown:
The percentage composition of tungsten in the compound = ?
Solution:
To evaluate the percentage composition of an atom in a compound, one must express the ratio of the atomic weight of the atom and the molar mass of the compound as a percentage i.e
Percentage composition of W = [tex]\frac{atomic weight of W}{Formula mass of WC}[/tex] x 100
Atomic weight of W = 183.84g/mol
Atomic weight of C = 12.01g/mol
Formula mass of WC =( 183.84 + 12.01)g/mol = 195.85g/mol
% composition of W = [tex]\frac{183.84}{195.85}[/tex] x 100 = 93.87%
The percentage composition of tungsten is 94%
