If 1.5 moles of oxygen combines with aluminium to form Al2O3, then the weight of aluminium (atomic weight = 27) used in this reaction is __________ gm?

Related Mcqs:

Pick out the wrong statement?

A. Refractories used in muffle furnace should have low thermal conductivity B. The electrical resistivity of refractories drops rapidly with rise in temperature C. For reducing spalling tendency, the refractory should be well fired and its porosity should be more D. Refractoriness under load (RUL) of a refractory is always less than its refractoriness...

A gas at 0°C is cooled at constant pressure until its volume becomes half the original volume. The temperature of the gas at this state will be_______________?

A. -136.5°C B. – 136.5°K C. -273°C D. 0°K...

A rigid vessel containing three moles of nitrogen gas at 30°C is heated to 250°C. Assume the average capacities of nitrogen to be Cp = 29.1 J/mole.°C and, Cv = 20.8 J/mole.°C. The heat required, neglecting the heat capacity of the vessel, is__________________?

A. 13728 J B. 19206 J C. 4576 J D. 12712 J...

At room temperature, the product [H+] [OH-] in a solution is 10-14 moles/litre. If, [OH-] = 10-6 moles/litre, then the pH of the solution will be ________________________?

A. 6 B. 8 C. 10 D. 12...

Pick out the correct statement ?

A. A substance existing above its critical temperature is called a saturated vapor B. A mixture of vapor gas is called saturated, if the equilibrium vapor pressure of the liquid is more than the partial pressure of the vapor at the same temperature C. Heat added to or given up by a substance at constant … Pick out the correct statement ?Read More...