Define the term half-life and illustrate it with an example.

Chemistry

1 answer:

drek231 [11]2 years ago

6 0

Answer:

The half-life is defined as, the substance which are radioactive in the nature and it is charactertics constant. It basically measured the duration or time, when the quantity of the substance are reduced by the half with decay consequences. This process is defined the term half-life.

For example - The life of the medical are basically referred to the half life of the biological to drugs and other reactions in the body of human.

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A sample weighing 3.110 g is a mixture of Fe 2 O 3 (molar mass = 159.69 g/mol) and Al 2 O 3 (molar mass = 101.96 g/mol). When he

grandymaker [24]

Answer:

The mass fraction of ferric oxide in the original sample : $\frac{723}{3110}$

Explanation:

Mass of the mixture = 3.110 g

Mass of $Fe_2O_3=x$

Mass of $Al_2O_3=y$

After heating the mixture it allowed to react with hydrogen gas in which all the ferric oxide reacted to form metallic iron and water vapors where as aluminum oxide did not react.

$Fe_2O_3(s)+3H_2(g)\rightarrow 2Fe(s)+3H_2O(g)$