When you prepare a kettle of stew over a camp fire, the stew is warmed in a variety of ways. explain the combination of processes.

A kettle of stew over a campfire is heated by two methods: radiation, conduction and  convection.

In radiation heat energy is transferred in the form of electromagnetic waves through air, thus allowing the fire to heat the kettle containing the soup.

The hot kettle is then heating up the soup by the process of conduction. In conduction heat is directly transferred from the hot body to the cold body.

The soup gets thoroughly heated by the process of convection. In convection the hot liquid particles have high energy and they move rapidly to take the place of particles that have less heat energy. In this way heat gets transferred from the hot to the cold part of the soup.

number of molecules / avogadro's number * molecule molecular = mass

explanation:

we define a gram-molecular weight as the mass of one mole of any element or compound. a mole contains avogadro's number of units (molecules) –  

6.022

x

10

23

. so, dividing the number of molecules by avogadro's number gives us the number of moles. multiplying that by the molecular weight gives us the mass. from the periodic table we find the gram-molecular weight of u to be238 and of f to be19. so,  

u

f

6

will have a gram-molecular weight of 352g.

the answers would be

the first one and the second one