Problem E5

Moderators: Chem_Mod, Chem_Admin

Rebecca Cheung 1E
Posts: 20
Joined: Fri Sep 29, 2017 7:04 am

Problem E5

Postby Rebecca Cheung 1E » Tue Oct 03, 2017 5:02 pm

(A) The approximate population of Earth is 7.0 billion people. How many moles of people inhabit Earth?
(B) If all people were pea pickers, how long would it take for the entire population of Earth to pick 1 mol of peas at the rate of one pea per second, working 24 hours per day, 365 days per year?

Okay so for (A) I got 1.2 x 10^-14 mol and for (B) I got 2.7 x 10^6 years. Can anyone help verify these answers for me? If they're wrong can you show the correct way to get the answer? Thank you!

Lena Nguyen 2H
Posts: 51
Joined: Fri Sep 29, 2017 7:06 am
Been upvoted: 1 time

Re: Problem E5

Postby Lena Nguyen 2H » Tue Oct 03, 2017 5:07 pm

Your answers are correct, and you can check the answers to any odd problems in the back of the book or in the solutions manual.

Dayanara Ruiz
Posts: 18
Joined: Fri Sep 29, 2017 7:03 am

Re: Problem E5

Postby Dayanara Ruiz » Tue Oct 03, 2017 9:40 pm

Hello. For A.) I also got 1.2 x 10^-14mol. Although form answer was different for part B.) 2.6 x 10^6 years instead of 2.7. You can double check your work in the solutions manual, there answer is also 2.6. Hope it helps.

204918982
Posts: 50
Joined: Fri Sep 29, 2017 7:04 am

Re: Problem E5

Postby 204918982 » Thu Oct 05, 2017 8:35 pm

Yes I got those answers too and I checked them in the solutions manual :)

Ashley Kim
Posts: 62
Joined: Fri Sep 28, 2018 12:19 am
Been upvoted: 1 time

Re: Problem E5

Postby Ashley Kim » Fri Sep 28, 2018 4:28 pm

Is it one pea per second per PERSON, or just one pea per second OVERALL?

Nicolette_Canlian_2L
Posts: 77
Joined: Fri Sep 28, 2018 12:25 am
Been upvoted: 1 time

Re: Problem E5

Postby Nicolette_Canlian_2L » Sun Sep 30, 2018 10:58 pm

How do you go about solving part b? Do I use the same equation I used for part A?

Xiangkun Shi 3E
Posts: 31
Joined: Fri Sep 28, 2018 12:25 am

Re: Problem E5

Postby Xiangkun Shi 3E » Sun Sep 30, 2018 11:18 pm

I got the same answers as you :)


Return to “Empirical & Molecular Formulas”

Who is online

Users browsing this forum: No registered users and 1 guest