Molar mass calculations for unknown #2

Trial 1:

Trial 2:

Percent Error

Trial 1:

(123.4g/mol - 122.4g/mol)/122.4g/mol= 0.00816(100)= 0.82%

Trial 2:

(122.9g/mol - 122.4g/mol)/122.4g/mol= 0.00404(100)= 0.41%