I need help with a chemistry problem

label Chemistry
account_circle Unassigned
schedule 1 Day
account_balance_wallet $5

4.  Determine the molecular weight for the following compounds.


a.       O2 - oxygen



b.       CO – carbon monoxide



c.        NH3 - ammonia



d.       C2H4 - ethylene



e.        C5H2 – pentane



f.        C2H2 – acetylene



g.        C3H80 – isopropyl alcohol



h.       H2SO4 – sulfuric acid


i.         NaOH – sodium hydroxide

Nov 21st, 2015

Thank you for the opportunity to help you with your question!

To determine the molecular weight we should know the atomic mass of each element

Atomic mass

Now using the above atomic mass we can calculate the molecular weight of the above compound as

CompoundMolecular mass
O22*atomicmass of O=2*15.99=31.9988
COAtomic mass of C+O=12.01+15.99=28.01
NH3Atomic mass of N+3*atomic mass of H=14.0067+3*1.007=17.03
C2H42*atomic mass of C+4*atomic mass of H=2*12.01+4*1.007=28.0532
C2H22*atomic mass ofC+2*atomic mass of H=2*12.01+2*1.007=26.0373
C3H8O3*atomic mass of C+8*atomic mass of H+atomic mass of O=3*12.01+8*1.007+15.99=60.095
H2SO42*atomic mass of H+atomic mass of S+4*atomic mass of O=2*1.007+32.065+4*15.99=98.0785
NaOHatomic mass+Na+atomic mass of O+atomic mass of H=22.9897+15.99+1.007=39.997

Please rate my answer so that I can further help you in the future.Thanks
Nov 21st, 2015

Nov 21st, 2015

Did you know? You can earn $20 for every friend you invite to Studypool!
Click here to
Refer a Friend
Nov 21st, 2015
Nov 21st, 2015
Jun 27th, 2017
Mark as Final Answer
Unmark as Final Answer
Final Answer

Secure Information

Content will be erased after question is completed.

Final Answer