For 138 g , maximum mass of aspirin is 180g
so for 2 g f salicylic acid maximum of aspirin is (2 * 180) / 138 = 2.61 g to nearest hundredth of a gram
Answer:
The substance(s) to the left of the arrow in a chemical equation are called reactants. A reactant is a substance that is present at the start of a chemical reaction. The substance(s) to the right of the arrow are called products . A product is a substance that is present at the end of a chemical reaction.
The mass given on the periodic table is the weighted average of the abundance of isotopes. Because heavier isotopes (more neutrons) of argon are more abundant than potassium's, by pure statistics, argon will appear with a greater mass on the periodic table.
in easy way
we can also say :- Argon has greater proportions of heavier isotopes with more neutrons than potassium.
If a substance has a half-life of 39.1 min, and there are initially 20.0 g of the substance 2.39 g will remain after precisely two hours.
Solution:
N(t) = N0 (1/2)^t/t1/2
Nt = 20 (1/2)^120/39.1
Nt = 2.39 g
What is half life?
The time it takes for one-half of a radioactive isotope to decay is known as its half-life, and it is both an intriguing and practical feature of radioactive decay. An individual radioactive isotope's half-life is unaffected by environmental factors and is independent of the isotope's starting concentration.
N(t) = N0 (1/2)^t/t1/2
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