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Sketch a series of titration curves for the titration of a strong acid with a strong base where the concentration of the acid is 10-1, 10-2, and 10-3 mol dm-3 respectively.
Do you think a comparable spill of a water-insoluble liquid that has a density of 1.20g/mL would have been as harmful to waterfowl and aquatic mammals.
Calculate the final temperature of the mixture assuming no heat loss to the surroundings. The heat capacities of H2O(s) and H2O(l) are 2.08 and 4.18 J/g · °C, respectively.
Calculate the total pressure atmosphere (atm) of a mixture of 0.0200 mol of helium gas, He and 0.0100 mol of hydrogen, H2 in a 2.50L flask at 10 degrees celcius.
When 780 g of benzene (Molar mass = 78 g/mol)& ; reacts with 750 mL of concentrated HNO3 (16 M) and 750 mL of H2SO4 (18 M), 1000 g of nitrobenzene (molar mass = 123 g/mol) and 250 g of an unknown co
The reaction: 2 HI → H2 + I2, is second order and the rate constant at 800 K is 9.70 × 10-2 M-1 s-1. How long will it take for 8.00 × 10-2 mol/L of HI to decrease to one-fourth of i
If a 10.00L vessel has 2.50 mol CO2 and H2O, and 5.00 mol CO2 and H2 gas at 588°K, (Kc = 31.4 at 588°K), what are the concentrations of each component at equilibrium?
The liquid rate used is twice the minimum. The mass transfer coefficient for the gas phase is kya = 100 kgmol/h m^3 and for the liquid phase kxa = 2000. The equilibrium relationship can be represent
An empty pressure vessel weighing 5 kg is placed in a water bath at 170 oC. It is slowly filled with n-Pentane while the vessel pressure is monitored. As soon as a jump in pressure is detected the f
Why we call benzene phenyl and not benzyle when one hydrogen is removed because in case of alkanes we name them alkyl on the removal of one hydrogen atom?
how many moles of molecular hydrogen are consumed per mole of the precatalyst in order to convert it entirely to platinum metal?
Dinitrogen monoxide n2o decomposes producing nitrogen and oxygen gases.calculate the total volume of produced gases at STP. When 8.8 grams of dinitrogen monoxide decomposes.
If we assume the individual drank all of the alcohol at once (i.e. no metabolism of alcohol by the body), the total volume of blood for the individual was 1.5 gallons, and the individual was drinkin
Determine the entropy change of the system when 0.750 g of ethanol (C2H5OH) evaporates, given ΔH vaporization is 40.5 kJ/mol and the normal boiling point of ethanol is 78.5 °C.
when 50.0 grams of acetylene is allowed to react with excess oxygen, 75.0 grams of CO2 are formed. What is the percent yield of carbon dioxide?
Atmospheric pressure is 29.86Hg. What is the absolute pressure in psia being measured? The density of mercury at 70F is 13.543g cm^-3.
a solution which is 37.2 mass% hcl has a density of 1.19g/ml.what mass of hcl is contained in 30.0ml of a solution.
The standard free energy change for the formation of N2H4(l) from elements is +149 kJ/mol at 25 °C. What is the equilibrium constant for the reaction? (R = 8.314 J/K·mol)
What is the standard cell potential of a Cr-Hg cell? (Remember to switch one-half reaction to oxidation and to balance the number of electrons--use paper.)
A first-stage recovery of magnesium from seawater is precipitation of Mg(OH)2 with CaO: What mass of CaO, in grams, is needed to precipitate 1000lb of Mg(OH)2?
A quantity of N2 originally held at 3.80 atm in a 1.00L container at 26oC is transferred to a 10.0L container at 20oC. A quantity of O2(g is originally at 4.75 atm and 26oC in a 5.00L container is t
A mixture containing 3.9 mole of NO and 0.88 mole of CO2 was allowed to react in a flask at a certain temperature according to the following equation
What is the molarity (M) of a solution that contains 2.08 grams of NaOH (MM = 40.00 g/mol) in 79.65 mL of solution?
Consider the following equilibrium: Ag+(aq)+Cl-(aq)<-->AgCl(s). Use Le Chatelier's principle to predict how the amount of solid silver chloride will change when the equilibrium is disturbed by
2C4H10 + 13O2 → 8CO2 + 10H2O. How many moles of O2 are needed to react with 3.75 moles of C4H10?