Determine the percent yield if 155g of Hydrogen should have been produced,

but your experiment yielded 135g.

Percent yield of hydrogen is 87.096%

Explanation:

Theoretical yield = 155g

Experimental yield = 135g

% yield = [experimental yield / theoretical yield] * 100

% yield = (135 / 155) * 100

% yield = 0.87096 * 100

% yield = 87.096 %

The percentage yield of hydrogen is 87.096%

the old alchemists made significant contributions to science even though there starting premises were off a bit. their conclusions after failure would steer them into better directions for investigation. science is no more than close observation and the initial mistakes result in rethinking and retrying experiments.