Post a New Question

Chemistry

posted by on .

If I have 40mg of potassium, that would be how many moles of potassium?
mols= grams/atomic number

0.04g/39.0983= .001023062
would equal 1.02 x 10^-3 correct?
Did I do this problem correctly?

  • Chemistry - ,

    Yes it is done correctly but if you have 40 mg that is only two sig figures (and then only if it is written as 40.); therefore, you would be allowed only two in the final answer. You have 3 s.f. in 1.02E-3.

Answer This Question

First Name:
School Subject:
Answer:

Related Questions

More Related Questions

Post a New Question