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Explain what are all the possible combinations of the isotopes of hydrogen and oxygen that can result in a water molecule? For example, one combination is 2H-2H-17O. Usually, we think of water having a molecular weight of 18 however this water molecule by virtue of its isotopic arrangement has a molecular weight of 19. In a similar manner, state all of the other combinations of the isotopes of hydrogen and oxygen in water.
What is the entropy change for freezing 4.25 g of C2H5OH at 158.7 K? H = -4600 J/mol. Answer in units of J/K.
How much of the solution is needed?
A bottle of concentrated sulfuric acid is labeled as 96 wt% (m/m) h2so4. The solution has a concentration of 18.0 M. a. What is the volume of the 18.0 M solution that is needed to make a 1.00 L solution that is 1.00 M H2So4
Energy cost of dissociation was found to be 4 kWh/m3 of CO2. Calculate conversion degree of CO2 into CO and O2 in this system.
In the representative elements, how does the stability of the lower oxidation state change as you go down a group and is there a different trend for transition metals
Calculate the pH of a buffer solution made by mixing 44 ml of a 0.10 M ammonia solution with 58 ml of a 0.10 M ammonium nitrate solution. Give the pH to two decimal places.
calculate the equilibrium constant for the neutralization reaction. To calculate the equilibrium constant, you may find it helpful to represent the neutralization reaction as the sum of two separate reactions. (b) Calculate the pH, [CH3CH2NH2], and..
In lab we are doing chemical kinetics. We started off with 0.7550 M of Oxalic acid and then added water and 0.1300 M of Permanganate. For the first trial, 5 mL of Oxalic acid was used, then 6 mL of water were added and then 1 mL of Permanganate we..
an extended source is spherical in shape with a radius of 2.00 cm and emits 12.57 w from 399.5 to 400.5 nm. determine
A mixture of Ar and N2 gases has a density of 1.491 g/L at STP. What is the mole fraction of each gas
What is the percent ionization of HA in 0.11 mol/L HA(aq) if HA is a weak acid with pKa=6.00. Enter your answer accurate to three significant figures
using a nitrogen gas sample in a container with capacity 1.64 litres a pressure of 121 atm is exerted by this gas
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