n an experiment the gram atomic mass of magnesium was determined to be 24.7. Compared to the accepted value 24.3, the percent error for this determination was A) 0.400 B) 1.65 C) 24.7 D) 98.4

B) 1.65

Explanation:

See the image uploaded for the percent error formula

Work:

Theoretical Value - Accepted Value/Accepted Value * 100

= (24.7-24.3)/24.3 * 100

= 0.4/24.3 * 100

= 0.0164609053 * 100

= 1.64609053

Can be rounded to 1.65%