Tiana is a chemist who is making a chemical to add to swimming pools in order to make the water safer. she mixed two solid substances together in a sealed container. the diagram above shows the repeating groups of atoms that make up the two starting substances. After mixing, Tiana found two liquid substances in the sealed container. (Nothing had escaped.) Which of the diagrams to the left shows the repeating groups of atoms that make up the ending substances? ​

Explanation:

chemical to add to swimming pools in order

to make the water safer. She mixed two solid

substances together in a sealed container.

The diagram above shows the repeating

groups of atoms that make up the two

starting substances.

After mixing, Tiana found two liquid

substances in the sealed container.

(Nothing had escaped.) Which of the

diagrams to the left shows the repeating

groups of atoms that make up the ending

substances?

Where are the pictures

Explanation:

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.

it's c. elements are placed in rows based on how may valencies electrons have.