Question not found

Not a good answer? Get an answer now. (Free)

Rating

There are no new answers.

Methane and hydrogen sulfide form when 36g H2reacts with carbon disulfide. Calculate the percent yield if the actual yield of CH4is 69.8g.
4H2(g) + CS2(g) CH4(g) + 2H2S(g)
a.
97%
c.
85%
b.
94%
d.
72%
**Weegy:** First we have to find the theoretical yield by doing a regular stoichiometric problem:
Given g H2 x 1 mol H2/molar mass H2 x molar ratio(mol CH4/mol H2) x molar mass CH4/1 mol CH4 = __ g CH4
Molar mass H2:
2 H x 1.008 = 2.016 g/mol
Molar mass [ CH4:
1 C x 12.01 = 12.01
4 H x 1.008 = 4.032
Add them up, we get 16.042 g/mol
The mole ratio can be obtained from the coefficients of the balanced equation: 1 mol CH4 : 4 mol H2
36 g H2 x (1 mol H2/2.016 g H2) x (1 mol CH4/4 mol H2) x (16.042 g CH4/1 mol CH4) = 71.6 g CH4
Now we find the percent yield by doing: mass actual yield/mass of theoretical yield x 100%
69.8/71.6 x 100% = 97.486%
Therefore , when Methane and hydrogen sulfide form when 36g H2reacts with carbon disulfide. The percent yield if the actual yield of CH4is 69.8g is a. 97% . ] (More)

Question

Expert Answered

Asked 3/27/2013 6:01:20 AM

0 Answers/Comments

Prior to calculating the volume of gaseous reactants or gaseous products you must:
a.
Count the subscripts in the equation
c.
Calculate the temperature of the reaction
b.
Add the coefficients
d.
Balance the chemical equation
**Weegy:** Prior to calculating the volume of gaseous reactants or gaseous products you must: c. Calculate the temperature of the reaction (More)

Question

Expert Answered

Asked 3/27/2013 6:06:15 AM

0 Answers/Comments

Prior to calculating the volume of gaseous reactants or gaseous products you must:
a.
Count the subscripts in the equation
c.
Calculate the temperature of the reaction
b.
Add the coefficients
d.
Balance the chemical equation
**Weegy:** Prior to calculating the volume of gaseous reactants or gaseous products you must:c. Calculate the temperature of the reaction (More)

Question

Expert Answered

Asked 3/27/2013 6:13:23 AM

0 Answers/Comments

Municipal bonds are issued by ____.
a.
the federal government
b.
major corporations
c.
state, county, and city governments
d.
small start-up companies

Question

Updated 10/20/2015 6:44:09 PM

1 Answer/Comment

The charge on a gamma ray is ____. A) 2
B) 1
C)0
D)2 **Weegy:** The charge on a gamma ray is: C) 0. (More)

Question

Expert Answered

Asked 3/28/2013 6:26:51 AM

0 Answers/Comments

26,353,212 questions answered

There are no comments.