How was the periodic table arranged
2 answers:
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Answer: 0.11 g/ml
Explanation:
Half-life = 81 minutes
First we have to calculate the rate constant, we use the formula :
Now we have to calculate the age of the sample:
Expression for rate law for first order kinetics is given by:
where,
k = rate constant = 0.008\text{minutes}^{-1}[/tex]
t = time of decomposition = 324 minutes
a = let initial concentration of the reactant = 1.8 g/ml
a - x = concentration after decay process = ?
Now put all the given values in above equation, we get
Thus concentration after 324 minutes will be 0.11 g/ml.