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What do you think are some of the primary difficulties associated with a middle-aged person?
Chemical bottles labeled to contain blue-coloured NISO4 -6H20 often contain instead the green-coloured NISO4-7H2O.
A gaseous fuel mixture stored at 747 mmHg and 298 K contains merely methane and propane. While 11.3 L of this fuel mixture is burned, it produces 766 Kj of heat. Explain what is the mole fraction of methane in the mixture
What volume of O2 is needed to react completely with 20.9L of H2 to give H2O if all gases are measured at 25 degrees C and 1atm? The Balanced equation is: 2H2+O2 ----> 2H2O
A reaction has an activation energy of 110 kJ/mol and a rate constant, k=1.2 x 10^-12 s-1 at 0?C. At what temperature will the rate constant k=5.1 x 10^-7 s-1
if the rate of disappearance of ozone is -7.2 x 10-4 ms what is the rate of formation of oxygen?please show all work
A 1.2 L flask contains 0.500 mole of ammonia (NH3) at 150°C. Calculate the pressure of the ammonia inside the flask.
calculate the number of water molecules that can be prepared from 664 h2 molecules and 664 o2
Iodine-131 has a half-life of 8.0 days. If a person ingests 2.5 mg of NaI labeled with iodine-131, how much of the radioactive isotope remains in the body after 30. days
Calculate the molality of a hydrochloric acid solution that is 26.4% by mass and has a density of 1.19 g mL^-1
if copper has a photoelectric threshold wavelength of 279 nm calculate the velocity ms of the electron emitted when
The boiling point of water at sea level Is 1000C. At higher altitudes, the boiling point of water will be a) lower, because temperatures are lower b) lower, because the atmospheric pressure is lower c) higher, because the altitude is greater.
The cpn version of glucose into lactic acid drives the Phosphorylation of 2 moles of ADP to ATP and has a Delta G=-135 KJ/mol. C6H12O6(aq) + 2 HPO2-(aq) + 2 ADP 3-(aq) + 2 H+(aq) --> 2 CH3CH(OH)COOH(aq) + 2 ATP4-(aq) + 2 H2O(l)
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