Science
Chemistry Homework Help

Question Description

Student has agreed that all tutoring, explanations, and answers provided by the tutor will be used to help in the learning process and in accordance with Studypool's honor code & terms of service.

Final Answer

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

The molar mass of CH2 is 14.0267 g/mol. 
(42 g/mol) / (14.0267 g/mol) = 3 to the nearest whole number 
So multiply the empirical formula by 3: 
                                                 C3H6


2=

 each one determine the number of moles of each atom in a given sample. 

moles = mass / molar mass 


10. 
moles Pb = 38.43 g / 207.2 g/mol = 0.1855 mol 

moles C = 17.83 g / 12.01 g/mol = 1.485 mol 

moles H = 3.74 g / 1.008 g/mol = 3.710 moles 

Now ratio Pb : C : H 
= 0.1855 : 1.485 : 3.710 

divide each number in the ratio by the smallest number 
Pb : C : H 
(0.1855/ 0.1855) : (1.485 / 0.1855) : (3.710 / 0.1855) 
1 : 8 : 20 

empirical formula 
PbC8H20 

Please let me know if you nea case for torture by michale levined any clarification. I'm always happy to answer your questions.

duingpung (540)
UIUC

Anonymous
Great! 10/10 would recommend using Studypool to help you study.

Studypool
4.7
Trustpilot
4.5
Sitejabber
4.4