Many important metals occur as sulfide, arsenide, and antimonide minerals, especially in the Sudbury mineral complex. The first step in processing these ores involves “roasting” the ore in air to produce the metal or metal oxide, along with nonmetal oxides that can be serious pollutants if not trapped. Suppose that you roast 1.00 kg of the mineral maucherite, Ni11As8. The balanced equation for the reaction is: 2 Ni11As8 + 31 O2 → 22 NiO + 8 As2O5 (a) How many kg of NiO can be produced? (b) How many kg of the pollutant As2O5 can be produced? (c) How many liters of air at 25°C are required for roasting? Assume that air contains 23% O2 by mass, and that the density of air at 25°C is 1.2 g/L. Molar masses: Ni11As8 1245.0 g/mol NiO 74.69 g/mol As2O5 229.84 g/mol
Many important metals occur as sulfide, arsenide, and antimonide minerals, especially in the Sudbury mineral complex. The first step in processing these ores involves “roasting” the ore in air to produce the metal or metal oxide, along with nonmetal oxides that can be serious pollutants if not trapped. Suppose that you roast 1.00 kg of the mineral maucherite, Ni11As8. The balanced equation for the reaction is: 2 Ni11As8 + 31 O2 → 22 NiO + 8 As2O5 (a) How many kg of NiO can be produced? (b) How many kg of the pollutant As2O5 can be produced? (c) How many liters of air at 25°C are required for roasting? Assume that air contains 23% O2 by mass, and that the density of air at 25°C is 1.2 g/L. Molar masses: Ni11As8 1245.0 g/mol NiO 74.69 g/mol As2O5 229.84 g/mol
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Many important metals occur as sulfide, arsenide, and antimonide minerals, especially in the Sudbury
mineral complex. The first step in processing these ores involves “roasting” the ore in air to produce the metal
or metal oxide, along with nonmetal oxides that can be serious pollutants if not trapped.
Suppose that you roast 1.00 kg of the mineral maucherite, Ni11As8. The balanced equation for the
reaction is:
2 Ni11As8 + 31 O2 → 22 NiO + 8 As2O5
(a) How many kg of NiO can be produced?
(b) How many kg of the pollutant As2O5 can be produced?
(c) How many liters of air at 25°C are required for roasting? Assume that air contains 23% O2 by mass,
and that the density of air at 25°C is 1.2 g/L.
Molar masses: Ni11As8 1245.0 g/mol NiO 74.69 g/mol As2O5 229.84 g/mol
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