Pls help! Due today. You calculate the theoretical yield of a substance to be 320g. You measure your sample and find you have only 302g. What is your percent error?

Explanation:

% yields =  experimental yields / theoretical yields )x 100%

              =( 302 ÷ 320 )x 100% = 94.4 %

% error = 100% - 94.37% 5.64%

or u can use this law :

% error =(theoretical  value - experimental value )/ theoretical value) x 100%

              ( 320 - 302 )/ 320 ) x 100% = 5.64%

answer:

technetium is the most reactive. this is followed by silver. the least reactive out of these three elements is strontium.