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Calculate the pH at equivalence point when 40.0 ml of 0.50 M aniline is titrated with 30.0 ml of 0.67 M HBr. For aniline Kb=3.8x10exp
How many kilograms of CaH2 are needed to fill a 147 L tank with compressed H2 gas at 160 atm pressure and 27 degrees C?
Describe two different methods one could employ to determine if two white solids, that have identical melting points, are the same compound or two different compounds
The expansion of an IDEAL GAS in a vacuum. Is it an endothermic process
What is the mole fraction of solute and the molal concentration for an aqueous solution
If 435 grams of water at 23 celcius abssorbs 281 kJ of heat froma mountain climber's stove at an elevation where the boiling point of water is 87 celcius
How many moles of aluminum atoms, Al, are needed to combine with 0.133 mol of O atoms to make aluminum oxide, Al2O3?
A 5.0 mL sample of vinegar was titrated with 7.2 mL of 0.55 M NaOH(aq). If the density of the vinegar solution is 1.00 g/mL, what is the mass percent of acetic acid present?
Which of the following is a property of acid solutions?
It takes 171 minutes for the concentration of the reactant in a first-order reaction to decrease from 0.6000 M to 0.150 M at 25 C? How long will it take for the reaction to be 90.0% complete
If 28 mL of NaCl reacts completely with 46 mL of 0.44 AgNO3, what is the molarity of the NaCl solution? The reaction is: AgNO3 + NaCl = AgCl + NaNO3
You use 27.5 mL of NaOH to titrate 100.0 mL of HCl and 18.4 mL of NaOH to titrate 50.0 mL of 0.0782 M H2SO4. What are the concentrations of the HCl and NaOH respectively?
What is the density of the gas from the previous example if it contains 90% methane 10 % ethane under bottom hole condition (assume T=150 degrees F)
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