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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)
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Asked 3/27/2013 6:01:20 AM
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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)
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Asked 3/27/2013 6:06:15 AM
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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)
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Asked 3/27/2013 6:13:23 AM
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Municipal bonds are issued by ____. a. the federal government b. major corporations c. state, county, and city governments d. small start-up companies
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Updated 109 days ago|10/20/2015 6:44:09 PM
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Municipal bonds are issued by State, county, and city governments.
Added 109 days ago|10/20/2015 6:35:55 PM
This answer has been confirmed as correct, not copied, and helpful.
Confirmed by Andrew. [10/20/2015 6:44:11 PM]
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)
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Asked 3/28/2013 6:26:51 AM
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