What masses of iron oxide and aluminum must be used
Fe2O3 + 2Al -----> 2Fe + Al2O3
What masses of iron(III) oxide and aluminum must be used to produce 15.0 g of iron? What is the mass of aluminum oxide produced?
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The combustion of butane produces heat accordingto the equation 2C4H10(g) + 13O2(g) ->8CO2(g) + 10H2O(l) H°rxn =-5,314 kJ/mol What is the heat of combustion per gram of butane?
An electron that has a horizontal initial speed of 4.50 x 106 m/s enters a region that has an electric field of 120 V/m pointing vertically upward. (a) How long does the electron take to travel 23 cm in the horizontal direction?
What is the lowest energy absorption (moving electron from occupied toempty orbital) that we can have in the mode? (experimentally the excitation is of 17,000cm-1).
Q1. A forceof 5.0 N moves a 6.0 kg object along a rough floor at a constant speed of 2.5 m/s. (a) How much work is done in 25 s? (b) What power is being used? (c) What force of friction is acting on the object?
A boat capable of making 10.0 km/h in still water is used to cross a river flowing at speed of 4.0 km/h. The boat is directed (from the perpendicular to the shore) in such a way that its resulting motion is straight across the river. At what angle
Exactly 1.0 L of hydrogen gas(H2)is collected over water at 292 K under a total pressure of 152Torr. If the vapour pressure of water is 16.5 Torr at this temperature, what is the mole fraction of hydrogen in the gassample.
If this electron was on a dust particle with a mass of 1.0 x 10-18 kg, what would the net force (electric and gravitational)on the particle be?
What volume of CO2(g) measured at0.0 oC and 101.3 kPa is produced if 0.500 kg of CaCO3 isrequired to neutralize a sulfuric acid(H2SO4)spill?
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