2. Urea, (NH₂)2CO, is prepared by reacting ammonia with carbon dioxide as shown by: 2 NH: (g) + CO2 (g) …-> (NH2)CO (aq) + HO (I) In one process, 927 g of NH3 are treated with 1255 g of CO2. a. How many grams of (NH2)2CO are produced? erz b. How much excess reagent, in grams, is left at the end of the reaction?

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2. Urea, (NH₂)2CO, is prepared by reacting ammonia with carbon dioxide as shown by
2 NH3 (g) + CO2 (g) …> (NH2)CO (aq) + H2O (l)
In one process, 927 g of NH3 are treated with 1255 g of CO₂.
a. How many grams of (NH2)2CO are produced?
b. How much excess reagent, in grams, is left at the end of
3. The reaction between aluminum and iron (III) oxide
used in welding metals.
a.
generate temperatures approaching
2 Al + Fe2O3 --> Al2O3 +2 Fe
Calculate the mass of Al2O3 that is produced by reacting 182 g of Al with 648 g of
b. How many grams of the excess reagent is left at the end of the reaction?
151-commer 20
4. The reaction between solid calcium nitride and water produces ammonia and calcium hyd
Ca3N₂+6 H₂O 2 NH3 +3 Ca(OH)2
a. What mass of calcium hydroxide can be formed from the reaction when 34.25 g of
react with excess water?
C
b. If 47.02 g of calcium hydroxide was obtained from the reaction in (a), what is the
the reaction?
Transcribed Image Text:2. Urea, (NH₂)2CO, is prepared by reacting ammonia with carbon dioxide as shown by 2 NH3 (g) + CO2 (g) …> (NH2)CO (aq) + H2O (l) In one process, 927 g of NH3 are treated with 1255 g of CO₂. a. How many grams of (NH2)2CO are produced? b. How much excess reagent, in grams, is left at the end of 3. The reaction between aluminum and iron (III) oxide used in welding metals. a. generate temperatures approaching 2 Al + Fe2O3 --> Al2O3 +2 Fe Calculate the mass of Al2O3 that is produced by reacting 182 g of Al with 648 g of b. How many grams of the excess reagent is left at the end of the reaction? 151-commer 20 4. The reaction between solid calcium nitride and water produces ammonia and calcium hyd Ca3N₂+6 H₂O 2 NH3 +3 Ca(OH)2 a. What mass of calcium hydroxide can be formed from the reaction when 34.25 g of react with excess water? C b. If 47.02 g of calcium hydroxide was obtained from the reaction in (a), what is the the reaction?
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