Answer:
A hot spot is an area on Earth over a mantle plume or an area under the rocky outer layer of Earth, called the crust, where magma is hotter than surrounding magma. The magma plume causes melting and thinning of the rocky crust and widespread volcanic activity.
Hope this is what you mean be hot spot!
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Answer:
Approximately 49 minutes.
Explanation:
1 mile = 1.6 km
So 8.0 x 1.6 km
Minutes required: 
= 48.75 minutes
I hope this helped :)
2 Cu + O2 = 2 CuO
2 moles Cu ----------- 1 mole O2
moles Cu -------------- 7.25 moles O2
moles Cu =7.25 * 2 / 1
moles Cu = 14.5 / 1 => 14.5 moles
Answer A
