6 Dinitrogen monoxide N20- Known also as nitrous oxide and laughing gas-was one

Question

6 Dinitrogen monoxide N20- Known also as nitrous oxide and laughing gas-was one of carly anesthetics, and has recently regained popularity in this role in the dental ficld. It is made by the decomposition of ammonium nitrate which equations shown below. How many grams of NH4NO3 s are required to prepare 25.5 grams of N20 7. In the extraction of copper from its sulfide ore, the overall process may be summarized by the equation shown below. If the percentage yield is 450% how much copper will result from treatment of 7.50 x 10 grams of Cu2S? 8. One step of the Ostwald process for manufacturing nitric acid involves making nitrogen monoxide by oxidizing ammonia in the presence of platinum catalyst, which is shown by the equation below. If the percentage yield is 60.5% how many grams of NO can be produced from 5.00 x 10 grams of NH3? Pt(cat) 9. In a propane tank, there are 10.5 Kg of C3lig, calculate the number of C atoms. (First calculate molecules and then C atoms). 10. Calculate the percentage composition of Co(NH3)6cly to three significant digits 9

Explanation / Answer

Ans 6

Moles of N2O = mass/molecular weight

= 25.5g / 44g/mol

= 0.5795 mol

The balanced reaction

NH4NO3 = N2O + 2H2O

Moles of NH4NO3 = moles of N2O produced

= 0.5795 mol

Mass of NH4NO3 required = moles x molecular weight

= 0.5795 mol x 80 g/mol

= 46.363 g

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