What theory was Huygens writing about? the particle theory of light
the reflection of light off objects
the way objects refract light
the wave theory of light

is D.the wave theory of light

Explanation:

cuz i got it wrong :( but the answer is correct :3

D) wave theory of light

Explanation:

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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.