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A solution containing 0.555 g of an organic solid in 22.0 mL of distilled water shows a freezing point depression of 0.65 C. Assuming Kf for water to be 1.86 K-kg/mol, what is the molar mass of the solid?
What is the Brownian diffusivity of a 0.2 um (micrometer) particle in air? Assume T = 293 K and P = 1 atm.
The atmospheric pressure in La Grande (683 atmospheric pressure) is significantly lower than that of Portland (760 normal pressure). How would the boiling points of a liquid compare in these two locations? Why?
sodium carbonate na2co3 is used to neutralize the sulfuric acid spill. how many kilograms of sodium carbonate must be
What happened when 6.0M HCl was added to the contents of the tube in 7a above?
a solution is prepaired by mixing 90.0 ml of 5.00 m hcl adn 30.0 ml of 8.00 m hno3. water is then added until the final
Calculate the terminal velocity of particles with a density of 1.3 g/cm3 and a diameter of 250 microns falling through water at 200 C
477 j amount energy is added to a 74.0 grams sample of h2o at a temperature of 21 degree celsius. determine what will
the following density measurements were made on a bar of iron 7.58 gml 8.02 gml 7.83 gml 7.80 gml and 7.66 gml. the
Compound A, , was found to be optically active. On catalytic reduction over a palladium catalyst, 2 equivalents of hydrogen were absorbed to yield compound B. Ozonolysis of A gave two compounds. One was identified as acetaldehyde
Consider the same dilution above for an SN1 reaction. Would the time required for 95% for the starting material to react change as a result of this dilution?
An ideal solution is formed from a mixture of the nonvolatile solute urea, CO(NH2)2, and methanol, CH3OH. The vapor pressure of pure methanol at 20°C is 89 mmHg. If 4.9 g of urea is mixed with 31.0 g of methanol, calculate the vapor pressure of th..
Acetic acid is titrated with NaOH hydroxide. What is the relevant reaction. what is the equilibrium constant for this reaction, if Ka=1.76x10^-5 for acetic acid.
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