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A gas has a volume of 450.0 mL. If the temperature is held constant, what volume would the gas occupy if the pressure were doubled? Reduced by one-fourth?
sodium-24 is a radioistope with half life of 15 hours. A sample of pure sodium-24 has an inital mass of 400.0 g. what mass of sodium-24 remains after 60 hours?
Regarding the Human Genome Project (HGP) ~ Do you expect this sort of work to yield additional medical therapies as time goes on
How do you rank crystal lattice structures in order of decreasing efficiency of space in the structure
The specific heat of water is 4.18 . Calculate the molar heat capacity of water. What mass of natural gas must you burn to emit 258 of heat
Consider the reaction, 2 D(g) + 3 E(g) + F(g) => 2 G(g) + H(g) When [F] is decreasing at 0.60 mol/Ls, how quickly is [G] increasing
The standard free energy of activation of a reaction A is 89.0 kJ mol-1 (21.3 kcal mol-1) at 298 K. Reaction B is ten million times faster than reaction A at the same temperature
A 5.0 gram sample of tea was extracted with 200 mL of boiling water for 2 minutes. Caffeine from 2.0 mL of the above tea, after solid phase extraction, was diluted to 50. mL with the mobile phase. 10uL of the sample extract upon injection gave an ..
Determine the partial pressure. Calculate the total pressure and volume in liters at STP of Nitrogen, Helium and Neon mixture.
The free energy change of the conversion of tasmainium to bulgarium was - 60 kcal and the enthalpy of the reaction was determined to be - 9.2kcal.
If in an experiment 42g of CO is burned with excess oxygen gas. Calculate how many grams of CO2 will be formed in the process.
If 1.20 grams of sodium metal are reacted with 2.00 mL of water, how many grams of NaOH will be produced (The density of water = 1.00g/mL)
Determine value for the rate of formation of HCl during the same interval of 3 seconds If the rate of disappearance H2 = -0.13 M/s at this specific time?
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