PLEASE CAN SOMEONE ANSWER ? Eric and Paul both made airplanes in afterschool. They decided to have a contest to see which plane could fly the longest distance. Eric’s plane flew 6 meters. Paul’s plane flew 68 centimeters. Which plane flew the longest distance and how much farther did it fly?

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.

b.

the accuracy of the data.

i think it's letter a.