Define a mole and give an example​

A mole corresponds to the mass of a substance that contains 6.023 x 1023 particles of the substance. The mole is the SI unit for the amount of a substance. Its symbol is mol. By definition: 1 mol of carbon-12 has a mass of 12 grams and contains 6.022140857 x 1023 of carbon atoms (to 10 significant figures). Examples
1. Equations

When we write chemical equations, the quantities are assumed to be in moles. For example, in the following reaction one mole of bromine gains two moles of electrons to form two moles of bromide ions:

B"hf and f-"  is the correct answer took the test on edgenuity and got it right     

Standing in the sunlight and feeling the heat on your face (uv radiation is entering the skin, converting to infrared radiation, and is absorbed by your tissues)orstanding near a fire and feeling the heat on your skin (infrared radiation transfer)