can someone help please

Chemistry
Tutor: None Selected Time limit: 1 Day

What mass of O2 can be formed from the decomposition of 67.3 g of NH4NO3?

What mass of N2 can be formed from the decomposition of 67.3 g of NH4NO3?

What mass of H2O can be formed from the decomposition of 67.3 g of NH4NO3?

Dec 10th, 2014

2NH4NO3 = 2 N2 + O2 + 4 H2O. Balanced reaction.

Mole mass of ammonium nitrate is 80.  2 moles of NH4NO3 gives 1 mole of O2.  160 g of NH4NO3 gives 32 g of O2.  Therefore 67.3 g NH$NO3 yields 32/160 x 67.3 = 11.96 g O2

Molar mass of N2 is 14. So 67.3 g NH4NO3 yields 14/80 x 67.3 = 23.55 g N2

Molar mass of H2O is 18. So 67.3 g NH4NO3 gives 72/160 x 67.3 = 30.285 g H2O.

Answer: 11.96 g O2

               23.55 g N2

               30.285 g H2O


Dec 10th, 2014

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