A group of scientists is conducting an investigation to study the conductivity of
perovskite. At which temperature do they need to perform the experiments for
perovskite to conduct electric current?
A. T = 1980°C
B. T > 1980°C
C. T 21980°C
D. T< 1980°C

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.

give me abc and i will get it for u.