Abottle of vintage red wine has lost its label. the concentration of a radioactive isotope of hydrogen (hydrogen-3 or tritium) in the wine is 0.34 times that found in freshly bottled wines. if the half-life of tritium is 12.3 years, calculate the time elapsed since the wine was bottled. this is a first order decay.

19 years

Explanation:

Tritium follows a first-order decay which can be represented by the following expression.

where,

[H]t is the concentration of tritium at a certain time t

[H]₀ is the initial concentration of tritium

k is the rate constant

If we know the half-life (t1/2), we can calculate the rate constant.

2h2o2--> 2h2o + o2

this reaction is of the spontaneous decomposition of hydrogen peroxide down into water and oxygen.

add 2 molecules of hydrogen peroxide and 2 molecules of water. since oxygen is naturally diatomic, the total number of atoms of each element is now the same on both sides of the equation so it is balanced.

this may not be entirely correct but let me know.

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