Perform each of the following conversions show all step-ups: 5.60 mol KF= ? UNITS KF?

Question

(4.8 X 10) exponents 18 molecules Co=? Mol CO

7.704 g H2S=? UNITS H2S

1.8X10 exponents 22 Atoms Ba =? g Ba

Answer 1

The general formulas for all these are:

moles X  avogadro's number  = molecules (if molecules)

moles X  avogadro's number  = atoms (if atoms)

moles X molwt = grams (if molecules)

moles X atomicwt = grams (if atoms)

So for the first one

4.8x10^18 molecules = 6.02x10^23  X moles

solve for moles.

If you convert from grams to molecules just do it in two steps.