What is the atomic mass of HCl, MgCl2, and Pb(NO3)2?
Answer:
it's easy, just add all the atomic weights in the periodic table: HCL (36,4), MgCL2 (95,1) Pb (NO3)2 (331.1)
pay attenciones en la classe' =]
Open up your periodic table. Atomic masses are listed right there.
Then remember that it'll be that many grams per mol.
HCl = 1+35.5 g = 36.5 g
MgCl2 = 24+2*35.5 g = 95 g
Pb(NO3)2 = 208 + 2*(14+3*16) = 332 g
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