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Some physical properties of water are shown below. freezing point 0.00°C boiling point 100.00°C Kf 1.86°C/m Kb 0.512°C/m What is the freezing point of a solution of calcium chloride that contains 26.0 g CaCl2 dissolved in 330. g of water, answer should be significant to 0.01's place? Use molar masses with at least as many significant figures as the data given. What is the boiling point of the solution, answer should be significant to 0.01's place?
Calculate the 1)mls of 100mM of NaOH or HCl 2) grams of disodium phosphate 3) and the mls of water required to make a 200mM phosphate buffer at pH 6.85
This is for the dissolution of (NH_4)(NO_3) in water. If 4.52 mole of NH_4 NO_3 are dissolved, how many total moles of ions are produced
At 0.0 degrees C, if the volume of air is 2.5 mL and the pressure of the atmosphere that day is 805 mmHg, what is the number of moles of air.
A mixture is made by combining 1.39 lb of salt and 5.07 lb of water. What is the percentage of salt (by mass) in this mixture?
A 28.0-g sample of nitrogen gas combines completely with 6.0 of hydrogen gas to form ammonia. What is the mass of ammonia formed.
Sort the following transitions from an excited state to a ground state according to the series into which they fall. Drag the appropriate transitions to their respective bins of lyman series
Assume you place 0.167 grams of a gaseous compound in a 0.346 Liters flask. It exerts a pressure of 0.427 atm of 30 degrees Celsius.
If 3.00 moles of ZnS are combined with 4.00 moles of O2 how many moles of ZnO can be produced and how many moles of the excess reactant will be left over?
The following density measurements were made on a bar of iron: 7.58 g/mL, 8.02 g/mL, 7.83 g/mL, 7.80 g/mL, and 7.66 g/mL. The accepted value for iron's density is 7.85 g/mL. Find: The error of the average of this set of measurements
what volume of 420 ml of hydrogen occupy if the temperature is raised from 0 C to 95 C?
the water for the pan is not saturated with CO2. Will the reported percent CaCO3 in the original sample be too high, too low, or unaffected? Explain
What are the [H3O+] and the pH of a benzoic acid- benzoate buffer that consists of .32 m C6H5COOH and .12 M C6H5COONa. (Ka= 6.3 x 10^-5)
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