Saturday
December 7, 2013

# Posts by Summer

Total # Posts: 205

Chemistry
Solved, Nevermind.

Chemistry
Part 1: Each molecule of NO2, nitrogen dioxide, consists of 1 atom of N and 2 atoms of O. If you have 0.155 g. of NO2, how many molecules of NO2 do you have ? 0.155gx46.0 = moles moles x 6.02 E23 = answer Part 1 Answer: 2030000000000000000000 Part 2: How many atoms of N do you...

chem 1151
20.0% acetone 18.0% Ethyl Alcohol 62.0% water You take the mL you're trying to find divided by the whole solution, then multiply by 100. For example, you have 50.0mL/250.0mL = 0.20 Take 0.20 x 100 and it will give you the percent.

Chemistry
I found this answer, thank you :)

Chemistry
Part 1: Each molecule of NO2, nitrogen dioxide, consists of 1 atom of N and 2 atoms of O. If you have 0.155 g. of NO2, how many molecules of NO2 do you have ? 2030000000000000000000 was the correct answer Part 2: How many atoms of N do you have ?

math
-4<2x-3<4 add 3 to all sections -1<2x<7 Dive each section by 2 -0.5<x<3.5

Chemistry
Than you can be the one to tell my prof that, sir :)

Chemistry
Our work is online, and I tried to enter it as 2.03E21 and it would not accept it. It only accepts the answer if everything is correct. Thank you :)

Chemistry
Thank you :) 2030000000000000000000 was the correct answer Part 2: How many atoms of N do you have ?

Chemistry
Each molecule of NO2, nitrogen dioxide, consists of 1 atom of N and 2 atoms of O. If you have 0.155 g. of NO2, how many molecules of NO2 do you have ? If you could, please include steps as to how to do the problem. Thank you

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