what’s the number of atoms in 2.50 mol & 1.50 g?

Um, the answer would be nice but i really want to know how to do it…….chemisty is so hard..

Top 2 Answers

A few days ago

Anonymous

Favorite Answer

The 2.50 moles is easy: there are 6.0222 x 10^23 atoms per mole, so multiply that by 2.50 and take three significant digits.

The 1.50 g is impossible to answer without knowing grams of what.

Edit:

OK. The atomic mass of sulfur is 32.06. That means, among other things, that there are 32.06 grams in a mole of sulfur. So:

1.50 g/(32.06 g/mole) = .0468 moles of sulfur

.0468 moles * 6.0222 x 10^23 atoms/mole = 2.88 x 10^22 atoms

A few days ago

omicron_gray

Use avogrado’s number to get number of particles,atoms,molecules is the number of mols is given.

Avogrado’s number is = 6.023 x 10 to the 23

number of atoms = avogrado’s X no. of mols.

in your problem 1.50g is just a trick given, u dont need to use it

number of atoms =(6.023×10^23)(2.50)

number of atoms =1.50575X10^24 atoms

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