The heaviest known isotope of hydrogen is called tritium, . it decays by beta emission, and has a half-life of 12.3 years. what
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<u>Answer:</u> The percentage yield of aspirin is 38.02 %.
<u>Explanation:</u>
To calculate the number of moles, we use the equation:
.....(1)
- <u>For salicylic acid:</u>
Given mass of salicylic acid = 10.09 g
Molar mass of salicylic acid = 138.12 g/mol
Putting values in equation 1, we get:
The chemical equation for the formation of aspirin follows:
As, acetic anhydride is present in excess. So, it is considered as an excess reagent.
Thus, salicylic acid is a limiting reagent because it limits the formation of products.
By Stoichiometry of the reaction:
1 mole of salicylic acid produces 1 mole of aspirin.
So, 0.0730 moles of salicylic acid will produce = of aspirin
Now, calculating the mass of aspirin from equation 1, we get:
Molar mass of aspirin = 180.16 g/mol
Moles of aspirin = 0.073 moles
Putting values in equation 1, we get:
To calculate the percentage yield of aspirin, we use the equation:
Experimental yield of aspirin = 5.0 g
Theoretical yield of aspirin = 13.15 g
Putting values in above equation, we get:
Hence, the percent yield of aspirin is 38.01 %.
Answer: sorry for the late answer, I just took the test today.
It provides instructions for processes of the cells
Explanation:
Answer: The coefficient in front of AgCl when the equation is properly balanced is 2.
Explanation:
According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.
Decomposition is a type of chemical reaction in which one reactant gives two or more than two products.
Decomposition of silver chloride is represented as:
Thus the coefficient in front of AgCl when the equation is properly balanced is 2.