Question

what is the molarity of a solution made by mixing 178.5 of 1.5 M NaCl with 283.4m of 4.3M NaCl

Mnacl*L nacle =(1.5)(.001718)=.0026775
moles nacl=(4.3)*(.002834)=.0121862
total moles = .0026775+.0121862=.0148moles
final volume = .001785+.002834=.004819 L
m/l= 3.21779

I don't think this is rite but please check it I moved two places to the left because the problem is ml and I thought it had to be in Liters
plz help

Answer 1

You're right. The volume is in mL and it must be in L; therefore, move the decimal three places to the left.
178.5 mL = 0.1785 L
283.4 mL = 0.2834 L.
Amber, I know it is against your principles to use the cap key; however, nacl, nacle, etc doesn't mean a thing to me. I can guess but sometimes that isn't good enough. Note that I respond with caps at the beginning of a sentence, periods at the end, and non-text type writing between so it will be as plain as possible to readers. You should do the same if you want responsible answers to your questions.

Answer 2

so would the answer be M/L= 3.22
or .0322 ?