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The standard molar enthalpy of fusion of ice is 6.01 kJ/mol. The desities of ice and liquid water at 0 degree celcius are 0.9167 and 0.9998 g/cm3.
Calculate the pH of a solution made from dissolving 1.00 moles of benzoic acid with 1.00 moles of sodium benzoate in enough water to make 750ml of solution.
Calculate the pH of the above solution if 1.00 moles of benzoic acid and .97 moles of Sodium Benzoate are added in enough water to make 750ml of solution
A gas mixture containing oxygen, nitrogen, and neon exerts a total pressure of 1.20 atm. If helium added to the mixture increases the pressure to 1.50 atm, what is the partial pressure (atm) of the
What is the pH of a solution to which 35.0 ml of .20 M HCl and 50.0 ml of .42M NaOH have been combined
A gas mixture containing oxygen, nitrogen and neon exerts a total pressure of 1.20 atm. If helium added to the mixture increases the pressure to 1.50 atm, what is the partial pressure (atm) of heliu
Using the method of successive approximations, what is [H3O+] in 0.00500 M CH2ClCOOH(aq) (Ka=1.4x10^-3) and how many iterations (n) are needed to validate that a constant value had been obtained? Ex
how many iterations (n) are needed to validate that a constant value had been obtained? Express [H3O+] using two significant figures, followed by a comma and the number iterations as an integer
In a gas mixture, the partial pressure are argon 415 mmHg, neon 75mmHg, and nitrogen 125 mmHg. What is the total pressure (atm) exerted by the gas mixture
In an acidic dry cell battery, the following unbalanced half reaction takes place in acidic solution: MnO2(s)>Mn2O3(s). a)balance the half reaction. b)is MnO2(s) oxidized or reduced. c) indicate
A 269 mg sample of rock was found to have 2.45 × 10-6 mol of potassium-40 (t1/2 = 1.3 × 109 yr) and 2.45 × 10-6 mol of argon-40. How old was the rock? What assumption is made about
What is the molarity of C6H12O6 in an aqueous solution that is prepared by dissolving a 20.95 g sample of impure C6H12O6 in water to make 1,450 mL of solution. Assume that the sample is 93% C6H12O6
If the partial pressure of helium is the same as the partial pressure of oxygen, what do you know about the number of helium atoms compared to the number of oxygen molecules? explain.
The vapor pressure of the water at 16 degrees C is 14 mmHg; CaCO3(s)-->CaO(s)+CO2(g): a) what is the partial pressure of the CO2 gas? b) How many moles of CO2 gas were in the CO2 gas sample
What is the minimum mass of oxygen, in grams, needed to burn 39.7 g C6H6O? Give your answer to three significant figures
Use the activity series to determine which of the following ions will be reduced when an aluminum strip is placed in an aqueous solution of that ion: a)Fe^2+(aq) b)Au^3+(aq) c)Zn^2+(aq) d)H^+(aq) e)
Nitrogen dioxide reacts with water to produce oxygen and ammonia; 4NO2(g)+6H2O(g)-->7O2(g)+4NH3(g). At a temperature of 415 degrees C
What volume, in liters, of O2 at 35 degrees C and 1.19 atm can be produced the decomposition of 50.0 g of KNO3? 2KNO3(s)-->2KNO2(s)+O2(g).
2NH4NO3(s) delta--->2N2(g)+4H2O(g)+O2(g): a) How many liters of water vapor are produced when 25.8 g of NH4NO3 decomposes? b) How many grams of NH4NO3 are needed to produce 10.0 L of oxygen
Determine the molar mass of each of the following gases: a) 2.90 g of a gas that occupies 0.500 L at 0 degrees C and 1.00 atm (STP); b) 1.43 g of gas that occupies 2.00 L at 0 degrees C and 760 mmHg
A 10.0-g sample of krypton has a temperature of 25 degrees C at 575 mmHg. What is the volume, in milliliters, of the krypton gas
a)the anode b)the cathode c)the half reaction at the anode d)the half reaction at the cathode e)the overall reaction f)the shorthand cell notation
What is the IUPAC name for a molecule with a tert-butyl chain binded to the 3rd carbon of a cyclopentane, with an OH at the top (on first carbon)
Calculate the densities of of each of the following gases in g/L at ATP: a) C3H8; b) NH3; c) Cl2; d) Ar.