. Carbamide (CH4N2O), can be synthesized by the reaction of ammonia (NH3) with carbon dioxide (CO2):

2 NH3 (aq) + CO2 (aq) CH4N2O (aq) + H2O (l)

An industrial synthesis of urea obtains 87.5 kg of urea upon reaction of 68.2 kg of ammonia

with 105 kg of carbon dioxide. Determine the limiting reactant, theoretical yield of urea and percent yeild for the reaction

Explanation:

First we convert the given masses of reactants to moles, using their respective molar masses:

2.39 kmol of CO₂ would react completely with (2.39 * 2) 4.78 kmol of NH₃. There are not as many NH₃ kmoles so NH₃ is the limiting reactant.

We calculate how much urea would form with a 100% yield, using the moles of limiting reactant:

We convert that amount to kg:

Finally we calculate the percent yield:

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away from the curb

explanation:

the wheels would then hit the curb if it started to rolling, decreasing the chance of an accident.