Tungsten is used in light bulbs because its

Explanation:

Tungsten is used in light bulbs because its high melting point. Tungsten has a high melting point of .

Tungsten also has the lowest vapor pressure and the highest tensile strength out of all the metals.

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.