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Calculate the concentrations of all species in a 0.750 M Na2SO3 (sodium sulfite) solution. The ionization constants for sulfurous acid are Ka1 = 1.4× 10-2 and Ka2 = 6.3× 10-8.
Calculate the final temperature of 33 ml of ethanol initially at 20 degrees Celsius upon absorption of 541 J of heat. (density of ethanol =0.789 g/ml)?
How can i find the pressure of oxygen if it's in a mixture of .40 moles of oxygen and .20 moles of nitrogen at 1.2 atm pressure
The heat of solution of ammonium chloride is 15.2 kJ/mol. If a 6.253 g sample of NH4Cl is added to 65.0 mL of water in a calorimeter at 26.9°C.
You have given some aqueous solutions as a. LiClO4 b. HClO c. CH2CH3OH d. HClO4 e. HNO3 you just need to Classify each of the given aqueous solutions as a weak electrolyte, non electrolyte, or strong electrolyte ?
a gas company in massachusetts charges $2.80 for 15ft^3 of natural gas at 20 degrees C and 1 atm. Calculate the cost of heating 200mL of water from 20 degrees C to 100 degrees C.
Compute the Ka for the acid if the pH of the resulting solution = 6.36. and determine the pH of the resulting buffer
What is the chemical make-up of natural cleaners? How do these products compare to traditional cleaners? Are the active ingredients the same or different?
Determine the enthalpy change if The heat released when 24.9 grams of Potassium K reacts with excess H2O water is 124 kilo joules?
The Clean Air Act mandates that certain metropolitan areas must add oxygenates to the gasoline that is sold in that area. What is the reason that oxygenates are added to gasoline?
Consider the following reaction: CO + 2H2= CH3OH, kp= 2.26 x 10^2 at 25C . Calculate delta G for the reaction at 25C under each of the following conditions.
The decay constant for strontium- 90 is 0.0247 y^-1. how many grams of strontium-90 remain if 10.0g decay for exactly 60 years.
If the solubility of a gas is 7.5 g/L at 404 kPa pressure, what is the solubility of the gas when the pressure is 202 kPa.
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