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Problem- What is the molar mass of a compound if 5.12 grams is dissolved in 25.0 grams of chloroform solvent to form a solution that has a boiling point of 67.54 °C? The boiling point of pure chloroform is 61.70 °C and the boiling point elevation constant, Kbp, is 3.63 °C/m.
Write the complete solution in short and simple way
suppose that a 5.0X10^-5 M solution of Ba(OH)2 is prepared. What is the pH of the solution?
Calculate the molar concentration of a solution prepared by dissolving 2.34 g of sodium sulfate (MW = 142) in enough waterto make 250 ml of solution.
What is the change in internal energy (in J) of a system that releases 675 J of thermal energy to its surroundings and has 5.60 * 10^2 cal of work done on it?
write the balanced equation for the ionization of the weak base pyridine c5h5n in water h2o. phases such as aq or l are
Question- Automobile airbags contain solid sodium aside, NaN3, that reacts to produce nitrogen gas when heated, thus inflating the bag. 2NaN3(s) -> 2Na(s) + 3N2(g) Calculate the value of w (work) c following system if 20.4 g of NaN3 reacts complet..
Question- Calculate the vibrational contribution to the heat capacity and the total heat capacity for the following molecules (harmonic vibrational frequencies given)
To find the volume of a flask, it is first evacuated so it contains no gas. Next, 2.2 g CO2 is introduced into the flask. On warming to 33 °C, the gas exerts a pressure of 760.0 mm Hg. What is the volume of the flask in milliliters
magnesium oxide decomposes into magnesium and oxygen. if 12.09 of magnesium oxide decomposes to form 7.29 of
How much work is done when 18.0 grams of water vaporize at 100.°C under constant external pressure of 1.00 atm. The equation is: w=-P(delta change)V = -1.00atm * 30.62 L = -30.62 L atm ...and the answer is -3.10 kJ... How do you arrive at -3.10kJ ..
One of the steps in the commercial process for converting ammonia to nitric acid is the conversion of NH3 toNO: 4NH3(g)+5O2(g) 4NO(g)+6H2O(g)
potassium hydrohen phthalate khc8h4o4 functions as monoprotic acid. if a 1.46 g sample of impure khc8h4o4 requires 34.3
What is the pH of a 1.2 x 10-4 M solution of KOH? What is the hydronium concentration of this solution?
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