A clay pot at room temperature is placed in a kiln, and the pot's temperature doubles. How much more heat per second is the pot radiating when hot compared to when cool?

16 times

Explanation:

According to stefan Boltzman law

E∝T^4

Heat radiated by a body is proportional to 4th power of absolute temperature.   So, if the temperature becomes double the heat radiated will become 2^4 =  16 times.

answer is: naturally occurring solid, inorganic compound or element is mineral.

minerals usually have crystalline form, that means than crystal constituents (atoms, molecules or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions.

for example magnetite is a mineral of iron oxide (fe₂o₃).

calcite is a carbonate mineral and the most stable polymorph of calcium carbonate (caco₃).

dolomite is an   carbonate mineral composed of calcium magnesium carbonate (camg(co₃)₂).