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Problem- What is the freezing point of a solution containing 4.78 grams naphthalene (molar mass = 128.2 g/mol) dissolved in 32.0 grams paradichlorobenzene? The freezing point of pure paradichlorobenzene is 53.0 °C and the freezing point depression constant, Kfp, is -7.10 °C/m.
Explain the each and every step in detail for help
Question- Blood plasma is the solution remaining after cells (red, white, etc...) are removed from whole blood. The clinical analysis of free calcium in plasma can be down with a calcium liquid membrance ion-selective electrode.
explain what ( if anything) is wrong with the following student's statement: " our solution is red, so we should set the spectrophotometer to the red light range
Calculate the sulfur hexafluoride partial pressure when a circuit breaker with this gas mixture reaches its rated limit of -40.0 degree celcius. How does the density of the gas in the circuit breaker change as the temperature drops
A solution contains barium nitrate and ammonium chloride. Which of the following reagents would separate the two cation by making only one of them precipitate.
How many grams of cobalt(II) chloride are required to react completely with 60.0 mL of 0.200 M KOH solution?
When 2.45g of an unknown weak acid (HA) with a molar mass of 85.0g/mol is dissolved in 250.0g of water, the freezing point of the resulting solution is -0.258 degrees C.
A 0.456 gram sample of an unknown monoprotic acid (lets call it HZ) was dissolved in some water . Then the acidic solution was titrated to the equivalence point with 32.5 mL of 0.174 M KOH.
The final temperature of the calorimeter is 150°F. What is the mass of titanium used? The specific heat capacity of water is 4.184 J g-1 °C-1.
A 1.8M solution of 65 mL is diluted to a volume of 248 mili litres. A portion of that solutions 124-mili litres is diluted using water of 137 mili litres. Determine the final concentration of this solution?
At a certain temperature, the pH of a neutral solution is 7.72. What is the value of Kw at that temperature
The vapor pressure of a volatile liquid can be determined by slowly bubbling a known volume of gas through it at a known temperature and pressure.
What accelerating voltage is required to pass a N O +3 molecule through the exit slit of a magnetic sector mass spectrometer if the magnet has a field strength of 0.240T and the radius of curvature
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