A student reacts 36g of salicylic acid with 60 mL of acetic anhydride producing 29.5g of acetyl salicylic acid. What is the percent yield of the reaction?

62.82%

Explanation:

From the equation of reaction:

1 mole of salicyclic acid requires 1 mole of acetic anhydride to yield 1 mole of aspirin (acetyl salicyclic acid).

Mass of 1 mole of salicyclic acid = 138.121 g

Mass of 1 mole of acetic anhydride = 102.09 g

Mass of 1 mole of aspirin = 180.158 g

Therefore,

138.121 g of salicyclic acid is supposed to yield 180.158 g of aspiring

36 g of salicyclic acid will yield = 180.158 x 36/138.121

  = 46.957 g of aspiring

But 29.5 g of aspirin was produced.

Hence, percent yield of the reaction = 29.5/46.957 x 100%

= 62.82%

The percentage yield of the reaction is 62.82%.

answer is: nuclear fusion produces elements that are heavier than helium.

nuclei combine to form a heavier nucleus, releasing energy.  

for example, fusion of hydrogen atoms at the sun.  

this fusion nuclear reaction is in the inner core of the sun and hydrogen (atomic number 1) is conveted into helium (atomic number 2).  

the inner core is the central region of the sun and all solar energy is produced in the core by nuclear fusion.