Answer:
500 years
Explanation:
The original carbon-14 was 100%, and after 100 years, it decays 1.202%. So after 100 years it goes to 98.798%, after more 100 years (200 years), it will be 97.596% (98.798 - 1.202), thus, after n 100 years "package", the percenatge will be:
100% - actual% = n*1.202
n = (100% - actual%)/1.202
n = (100% - 94%)/1.202
n = 4.992
So, the number of years is n*100 = 4.992*100 = 499.2 ≅ 500 years.
1. inner core
2. outer core
3. mantle
4.crust
<span>Actually Igneous rocks are classified either based on grain size or
based on mineralogy. However grain size is clearly not a chemical property. So
we can say that they are classified chemically based on mineralogy or the
abundance of quartz or silica present.</span>
