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In Part B of this experiment, you need to add a known amount of the liquid unknown to your water-ice mixture. You want the concentration of the liquid unknown in solution to be around 2 m. Let's estimate how much liquid unknown you should add.
Assuming that there is about 100g of liquid water in the solution, how many moles of liquid unknown will be present in a 2 m solution? Also, assuming that the molar mass of the liquid unknown is about 50g/mol, calculate the approximate mass of liquid unknown that should be added to your water-ice mixture.
Gaseous oxygen is held in two separate containers at identical temperature and pressure. The volume of container A is 6.48 L and it contains 0.785 mol of the gas. The volume of container B id 5.78 L. How many moles of the gas are in container B
A 17.6 g sample of an alloy at 93.0°C is placed into 50.0 g of water at 22.0° C in an insulated coffee-cup calorimeter with a heat capacity of 9.2 J/K. If the final temperature of the is 31.1°C, what is the specific heat capacity of the alloy
When 5.00 g of fructose, C6H12O6, (FW 180.16 g/mol) is burned in a calorimeter whose heat capacity is 29.7 kJ/oK, the temperature increases by 2.635oK. Calculate the heat of combustion of fructose in kJ per mole.
For the reaction, A = B + C, the rate law is k[A]. If it takes 80.0 seconds for 70.0% of a 10.0 gram sample of A to be transformed into products, what is the value of the rate constant.
Quinine emits fluorescence at the wavelength of 347 nm. An unknown quinine solution gave fluorescence reading of 400 (after background subtraction) at the 347nm.
Estimate the average rate of production (Using this rate) of oxygen over the same time period. Considering the given equation 2H 2 O 2 --> 2H 2 O+O 2 -H 2 O 2
Why is a vapor unlikely to behave as an ideal gas near temperature at which vapor would liquefy?
Trichlorofluoromethane (CCl3F) boils are 23.8C and its molar heat of vaporization is 24.8 kj/mol. Calculate the molar entropy of evaporation of CC3F (l)
Monochloroacetic acid has a Ka of 1.35 x 10^-3. Calculate the pH of a 0.10 M solution of this acid.
A balloon is inflated with 0.2494 g of helium to a pressure of 1.26 atm. If the desired volume of the balloon is 1.250 L what must the temperature be in degree celcious
The equilbrium constant for the decompositon at 25 degrees C is 2.3 X 10 ^ -4. At 25 degrees C , 7.5 g of NH4CO2NH2 is sealed in a 10 L flask and allowed to decompose.
how many milliliters of .100 M NaOH are required to neutralize 50.00 mL of .215 moles of H2SO4
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