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A 0.250 L aqueous solution contains 50.0 g of ethanol, C2H5OH. Calculate the molar concentration of the solution in mol·L-1.
when sulfur dioxide, an air pollutant from the burning of sulfur-containing coal or oil, dissolves in water, an acidic solution is formed that can be viewed as containing sulfurous acid, H2SO3. H2O + SO2(g) HsSO3(aq) Write the expression for Ka1..
A 28.0-g sample of water at 290. K is mixed with 51.0 g water at 310. K. Calculate the final temperature of the mixture assuming no heat loss to the surroundings.
Why is sodium chloride added to the tea solution before extracting with ethyl acetate? 4 grams of calcium carbonate was added to 90 ml's of water in a flask
Question- Suppose it took the addition of 12.0mL of 0.01 M potassium oxalate to make 50 mL of a 0.010 M calcium chloride solution cloudy. Calculate the concentrations of the calcium and oxalate ions in the mixture and then calculate the Ksp of cal..
what is the appropiate mechanism for the radical polymerization of 1-butyne? show the polymerization of three units of 1-butyne.
Calcultate what is the value of enthalpy H reaction If the temperature increased from 35.0 degree celsius to 76 degree celsius and the heat capacity of the calorimeter = 23.3kj/c ? (the molar mass of C2H5OH = 46.07g/mol. )
Acid rain over the Great Lakes has a pH of about 4.5. Calculate the [H_3O^+] of this rain.
The ReO3 structure is cubic with Re at each corner of the unit cell and one O atom on each unit cell edge midway between the Re atoms. Draw this unit cell and determine
Acetic acid flowing at the rate of 20kg pe min. Product p is of combination leaves at rate of 100 kg per minute. Determine the composition of p?
Question- Write Lewis structure that obeys the octet rule for OCS and assign formal charges to each atom. Draw the molecule by placing atoms on the grid and connecting them with bonds. Include all lone pairs of electrons. Show the formal charges o..
Assume you have a jar of pulverized rock to test. Create a detailed 4-step procedure describing how you expect to go about doing this.
If a chemist wants to make 1.3 l of 0.25 m solituion of KOH by diluting a stock solution of 0.675 m KOH, how many milliters of the stock solution would the chemist need to use
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