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Calculate the vapor pressure of ethanol at 30C (in mm Hg)? Bp of ethanol 76 C.
In the titration of 50.0 mL of 0.0200 M C6H5COOH(aq) with 0.100 M KOH(aq), what is/are the major species in the solution after the additon of 5.0 mL of NaOH(aq)
The first-order disappearance of a substance has a half-life of 34.0 s. How long does it take for the concentration of the substance to fall to 12.5% of the original value
A solution of ethanol (C2H5OH) in water is prepared by dissolving 57.0 mL of ethanol (density = 0.79 g/cm3) in enough water to make 255.0 mL of solution.
The unbalanced equation for the reduction of copper(I) sulfide with oxygen is given below. What mass of copper is produced from the reduction of 9.20 g Cu2S? Cu2S(s) + O2(g) Cu(s) + SO2(g)
a 45-g piece of ice at 0 degrees C is added to a sample of water at 9 degrees C. All of the ice melts and the temperature of the water decreases to 0 degrees C. How many gram sof water were in the sample?
a 7.6730 kg ball of putty specific heat 0.37690 j k-1 g-1 initially at 297.38 k is dropped from a height 226.46 m. what
Determine the maximum amount of P4S10(444.545 g/mol) that can be produced from 18.27 grams of Phosphorous (123.895 g/mol) and 9.42 g of sulphur (256.52 g/mol)
If the reaction is carried out in a 2.0 L container and 0.010 mol of PH3 is consumed each second, what are the rates of production of P4 and H2?
the gaseous product of a reaction is collected in a 25.0 l contained at 27 degrees celsius. the pressure in the
Determine the final temperature of the mixture. (Use 1g/mL as the density of water)
what is the ph of a phosphate buffer when h2po4-140mm and hpo4-23omm? assume the pka for this titration is
you purchase a cup of coffee, but, at 98.4 degrees C, it is too hot. You add 45.5 g of ice that is -2.2 degrees C to the 248ml of coffee. What is the final temperature of the coffee?
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