Scan_Doc0033

# Scan_Doc0033 - 126 Chapter Three Stoichiometry 141 A sample...

• Notes
• 1

This preview shows page 1 out of 1 page.

126 Chapter Three Stoichiometry 141. A sample of LSD (n-Iysergic acid diethylamide, C24H3oN30)is added to some table salt (sodium chloride) to form a mixture. Given that a 1.00-g sample of the mixture undergoes combus- tion to produce 1.20 g of CO 2 , what is the mass percent of LSD in the mixture? 142. Methane (CH 4 ) is the main component of marsh gas. Heating methane in the presence of sulfur produces carbon disulfide and hydrogen sulfide as the only products. a. Write the balanced chemical equation for the reaction ofmethane and sulfur. b. Calculate the theoretical yield of carbon disulfide when 120. g of methane is reacted with an equal mass of sulfur. 143. A potential fuel for rockets is a combination of BsH9 and 02. The two react according to the following balanced equation: 2BsH9(l) + 120 2 (g) ----* 5B 2 0 3 (S) + 9H 2 0(g) If one tank in a rocket holds 126 g BsH9 and another tank holds 192 g 02, what mass of water can be produced when the entire contents of each tank react together? 144. A 0.4230-g sample of impure sodium nitrate was heated, con- verting all the sodium nitrate to 0.2864 g of sodium nitrite and oxygen gas. Determine the percent of sodium nitrate in the orig- inal sample.

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern