Is the white solid cocaine
A 105.5 mg sample of a white substance is suspected to be cocaine, C17H21NO4. The substance formed 279.3 mg of CO2 and 66.46 mg H2O on combustion. The compound contains 4.680% N by mass. Is the white solid cocaine?
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Air at the rate of 18 kg/s is drawn into the compressor of a jet engine at 55 kPa and -23oC and is compressed reversibly and adiabatically to 276 kPa. Determine the required power input to the compressor expressed in horsepower.
Metallic aluminum reacts with MnO_2 at elevated temperatures to form manganese metal and aluminum oxide. A mixture of the two reactants is 67.2% mole percent Al. Find the theoretical yield (in grams) of manganese from the reaction of 280 g of this
Consider the combustion of {rm{H}}_2 (g):2{rm{H}}_2 (g) + {rm{O}}_2 (g) rightarrow 2{rm{H}}_2 {rm{O}}(g). If hydrogen is burning at the rate of 0.61 {rm mol/s}, what is the rate of consumption of oxygen?
Consider a supersonic wind tunnel with test section Mach number of 2 and fixed geometry diffuser designed to operate with minimum stagnation pressure losses (smallest diffuser area).
The flask is removed from the bath and cooled, dried and reweighed. The new mass of the flask and condensed vapor is 115.23 g. Which of the following compounds could the liquid be?
How many grams of carbon dioxide can form when a mixture of 6.00 g ethylene (C2H4) and 2.50 g of oxygen is ignited, assuming complete combustion to form carbon dioxide and water?
What is the impact on your recommendation of the fact that the operating cash inflows associated with press A are characterized as very risky in contrast to the low- risk operating cash inflows of press B?
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