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Suppose a student returned some unused lead nitrate to the container marked"sodium nitrate". What could the student do to get all the led ions out from the sodium nitrate?
If the sample contains a combined total of 1.90 mol and has a total mass of 60.3g, what are the percentages of CO2 and Ne in the sample by mole?
Calculate the pH of the solution, taking into account the activity coefficients for H+ (yH+ = 0.933) and IO3- (yIO3- = 0.928). Assume yHIO3 = 1. (Hint: quadratic)
What is the value of Ksp for Ag2SO4 if 5.54 g is soluble in 1.00 L of water?
what is the pH of laundry water in your washing machine that contains 0.5 mg/L of bleach (hypochlorous acid, HOCl).
Which of the following would be expected to have the lowest freezing temperature?
What mass of ice at 0C must be added to 45g of water at 20C to cool it to the final temperature of 10C?
Consider a glass of 298 mL of water at 30°C. Calculate the mass of ice at -15°C that must be added to cool the water to 10°C after thermal equilibrium is achieved.
what is the freezing point(Degrees C) of a solution prepared by dissolving 11.3g of Ca(NO3)2 ( formula weight= 164g/mol) in 115g of water?
A cube of metal which looks like gold (Au, 19.32 g/cm3) is suspected by a modern Archimedes of being either iron (Fe, 7.90 g/cm3) coated with gold or aluminum
What is the pH at the equivalence point? (Kb of NH3 = 1.8 A 20.0 mL sample of 0.20 M sodium acetate is titrated with 0.11 M HCl(aq). What is the pH after the addition of 50.0 mL HCl(aq)?
Gibbs free energy of formation for ammonia is -3.9 kcal/gmole and the standard heat of formation for ammonia is -10.96 kcal/gmole. Find the fugacity coefficient at the reaction conditions and calculate the effect of it on the reaction conversion.
structure of the substance to be used in this experiment to initiate free radical chain chlorination
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