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Title: Determine the mass of 1.20 x 10^29 molecules of N2O5. Post by: Jess8219 on May 3, 2020 quantities of chemical reactions
Title: Re: Determine the mass of 1.20 x 10^29 molecules of N2O5. Post by: bio_man on May 4, 2020 Are you sure about this number? 1.20 x 10^29 molecules of N2O5, seems too big... Anyway, recall that 1 mole of N2O5 = 6.02214076×10²³ molecules of N2O5
So: 1.20 x 10^29 molecules of N2O5 X ( 1 mole of N2O5 / 6.02214076×10²³ molecules of N2O5 ) = 199264.7123 moles of N2O5. Find the molar mass of N2O5; it is 108.01 g/mol Multiply 108.01 g/mol by 199264.7123 moles of N2O5, you get the mass 2.15 x 10^7 grams. Let me know if this helps... Title: Re: Determine the mass of 1.20 x 10^29 molecules of N2O5. Post by: Jess8219 on May 4, 2020 i'm not getting the same answer for some reason, mind showing how you did using a calculator?
Title: Re: Determine the mass of 1.20 x 10^29 molecules of N2O5. Post by: bio_man on May 4, 2020 I was thinking something along the lines of this:
(https://biology-forums.com/gallery/41/6_04_05_20_10_11_19.png) (https://biology-forums.com/index.php?aIction=gallery;sa=view&id=41591) Title: Re: Determine the mass of 1.20 x 10^29 molecules of N2O5. Post by: Jess8219 on May 4, 2020 not getting 2.15 x 10^7...
Title: Re: Determine the mass of 1.20 x 10^29 molecules of N2O5. Post by: bio_man on May 4, 2020 Here's what it looks on the calc:
(https://biology-forums.com/gallery/41/6_04_05_20_10_51_29.gif) (https://biology-forums.com/index.php?action=gallery;sa=view&id=41592) I just wrote it in scientific notation because the number is in the billions! Title: Re: Determine the mass of 1.20 x 10^29 molecules of N2O5. Post by: Jess8219 on May 4, 2020 ok got it now, wasn't working the first time
Title: Re: Determine the mass of 1.20 x 10^29 molecules of N2O5. Post by: bio_man on May 4, 2020 ok got it now, wasn't working the first time Working on your other question now. Curious, do you have the answers to these to double-check ? Title: Re: Determine the mass of 1.20 x 10^29 molecules of N2O5. Post by: Jess8219 on May 4, 2020 unfortunately not, usually I have to figure it out on my own
Title: Re: Determine the mass of 1.20 x 10^29 molecules of N2O5. Post by: bio_man on May 4, 2020 No worries, just checking
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