A manganese-containing ore is digested and chemically treated to isolate manganese as MnO2(s). Heating the MnO2 at 1000 °C in air converts it entirely to Mn3O4(s).
Suppose a 2.44-g ore sample yields 0.229 g of Mn3O4(s) by this process.
Calculate the percent Mn2O3 in the ore sample.
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A manganese-containing ore is digested and chemically treated to isolate manganese as MnO2(s). Heating the MnO2 at 1000 °C in air converts it entirely to Mn3O4(s). Suppose a 2.44-g ore sample yields 0.229 g of Mn3O4(s) by this process.
A manganese-containing ore is digested and chemically treated to isolate manganese as MnO2(s). Heating the MnO2 at 1000 °C in air converts it entirely to Mn3O4(s). Suppose a 2.70-g ore sample yields 0.235 g of Mn3O4(s) by this process. Calculate the percent Mn in the ore sample. Calculate the percent MnO2 in the ore sample.
Heating a 6.600 g sample of an ore containing a metal sulfide, in the presence of excess oxygen, produces 1.450 L of dry SO, measured at 50.0 °C and 752.5 Torr. Calculate the percent by mass of sulfur in the ore. Assume that all sulfur in the sample was converted to SO. S(s) + O(g) → SO(g)
Heating a 6.568 g sample of an ore containing a metal sulfide, in the presence of excess oxygen, produces 1.466 L of dry SO, measured at 46.8 °C and 753.8 Torr. Calculate the percent by mass of sulfur in the ore. Assume that all sulfur in the sample was converted to SO. S(s) + O(g) → SO(g)