The mixing of barium chloride and sodium sulfate is a precipitate reaction. this reaction generates barium sulfide and sodium chloride. which best describes this reaction? barium chloride and sodium sulfate are solids, and barium sulfide or sodium chloride must be a liquid. all of the materials are liquids. all of the materials are solids. barium chloride and sodium sulfate are liquids, and barium sulfide or sodium chloride must be a solid.

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.

i believe the answer is three water molecules