can someone help me with a couple of chemistry questions?

[Night Fox]

please tell me the answers to 50 and 51, I just need to check my own
and for 52, please help me understand what a representative particle is and how it relates to a mole, and how to find out what the representative particle is of a substance

[Ad Bot]

[/Pacha]

a representative particle is the smallest unit of a substance. it's also the smallest unit that can be divided without changing its composition

thats all i remember

[ßlöükfáce]

rehost it I cant see it right now

[/Pacha]

rehost it I cant see it right now

i can see it just fine. it's only you

[Night Fox]

a representative particle is the smallest unit of a substance. it's also the smallest unit that can be divided without changing its composition
thats all i remember

but that would mean it was like a proton or neutron or electron, the tiny ones, but my book implies that the choices are atoms, molecules, ions, and formula units I think

rehost it I cant see it right now

it's on imgur, are you at school or something? what websites does your school not block?

[ßlöükfáce]

i can see it just fine. it's only you

yeah I know

yeah im at school
it blocks puush too

[Pie Crust]

If I'm not mistaken,
50: They're all the same.
51: 1mol of C₂H₆ because there are more atoms bonded together.

I haven't seen representative particles yet.

[/Pacha]

but that would mean it was like a proton or neutron or electron, the tiny ones, but my book implies that the choices are atoms, molecules, ions, and formula units I think

i think i misworded, sorry. the internet says this:

Representative particles is the breaking down of the smallest unit of a substance without altering the original composition. Some of the examples are atoms, molecules and ions. The representative particle of salt is an atom of sodium and another of chlorine.

so i guess i was wrong

[Pie Crust]

A molecule is formed by atoms, an atom is the smallest unit of a substance and an ion is an atom without electronic equilibrium. A simple math will give you the answers. You might need a periodic table to do the math though.

[Flatflyer]

I feel like I'm gonna kill myself when I get to Grade 11 Chemistry.

[Pie Crust]

I'm in grade 10 and we barely started the school year. Get ready Flat.

[Night Fox]

ok, so the mole of a substance is 6.02 x 10²³ representative particles of the substance
and I also now know what a representative particle is
but I still don't know exactly how to figure out what the representative particle of something is!
my book says that the representative particle of C₁₂H₂₂O₁₁ is a molecule, same thing for water
but that the representative particle for CaF₂ is a formula unit. why isn't it a molecule?
I understand why the representative particle for N is an atom and an ion for Ca²⁺
but what's the difference between substances whose representative particle is a formula unit or a molecule?

[Hammereditor5]

This is exactly what I am learning in science class right now.

[Pie Crust]

After a quick google which you could have done, I got this.

Avogadro's constant is:
6.02 x 10^23 representative particles = 1 mole

 Avogadro's Constant (6.02 x 10^23) is the number of particles of a substance in 1 mol of that substance

So, if I'm not mistaken,

3.35 mol Tin (Sn)
3.35 x (6.02 x 10^23) = 2.01 x 10^24 representative particles

4.80 mol Sodium Iodide (NaI)
4.8 x (6.02 x 10^23) = 2.89 x 10^24 representative particles

7.50 mol Sulfure Dioxide (SO₂)
7.5 x (6.02 x 10^23) = 4.52 x 10^24 representative particles

0.400 mol Potassium Chloride (KCl)
0.400 x (6.02 x 10^23) = 2.41 x 10^23 representative particles

[Night Fox]

thank you for not answering my question pie crust

what's the difference between substances whose representative particle is a formula unit or a molecule?

I wasn't asking for the answers to 52. I already said that