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How much heat is evolved when 27.0 g of glucose is burned according to this equation?
C6H12O6 + 6O2 → 6CO2 + 6H2O; Δ H comb. = -2808kJ
The mass of an electron is 9.11 times 10^{-31}kg. If the de Broglie wavelength for an electron in a hydrogen atom is 3.31times 10^{-10} how fast is the electron moving relative to the speed of light? The speed of light is 3.0 times10^8 m/s.
The specific heats of solid and liquid ethanol are 0.97 J/g-K and 2.3 J/g-K, respectively. How much heat (kJ)
A molecule of N2 in air travels at about 1000 ft/sec. If the supersonic transport Concorde travels at 1500 miles/hour, how fast does it travel in ft/sec? (1 mile = 5280 ft)
The atomic mass of element X is 33.42 amu. A 21.83-g sample of X combines with 80.32 g of another element Y to form a compound XY. Calculate the atomic mass of Y.
The total pressure in the system is found to be 3.0 atm and the mole fraction is 0.12. Find K(pressure) Can someone explain all the steps to get to the answer?
How many kilograms of chalcopyrite must be mined to obtain 290. g of pure Cu ?
Provide the newman projections across the C 2 -C 3 bonds for the major conformers after Drawing the zig-zag structures of all the isomers of 2,3-diaminopentane.
Dipole moment, Formaldehyde has a very large dipole moment (2.33 Debye) whereas carbon monoxide has a very small dipole moment (0.11 Debye)
A particular brand of gasoline has a density of 0.737 g/mL. How many grams of this gasoline would fill a 15.6 gal tank?
The rate of effusion of a particular gas was measured and found to be 24.0 mL/min. Under the same conditions, the rate of effusion of pure methane (CH4) gas is 47.4 mL/min. What is the molar mass of the unknown gas?
3.38 grams of nitrogen gas are mixed with excess oxygen gas. The reaction yields 6.63 grams of nitrogen monoxide. nitrogen (g) + oxygen (g) -> nitrogen monoxide (g)
A gas measures 180.0 mL at 87.0°C and 800.0 mm. Find its volume at standard temperature and 800.0 mm of pressure.
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