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A groundwater sample obtained near a septic tank has a pH of 6.90 and HCO3- concentration of 8.25 mmol L-1. Calculate the partial pressure of carbon dioxide in the associated soil atmosphere.
The enthalpy of combustion of benzoic acid is commonly used as the standard for calibrating constant-volume bomb calorimeters; its value has been accurately determined to be 3226.7kJ/mol.
the NaOH solution is required to reach the endpoint in the titration of a 7.248 sample of vinegar. What is the mass percent of acetic acid in this vinegar sample?
What is the freezing point (°C) of a solution prepared by dissolving 11.3 g ofCa(NO3)2 (formula weight= 164 g/mol) in 115 g of water? Assume that i=3.00 for Ca(NO3)2 and the molal freezing point depression constant for water is1.86°C/m.
Assume that liquid water forms item 5. Write a formula equation for the reaction that shows the physical states of all compounds?
A series of lines in the spectrum of atomic hydrogen has a maximum wavelength of 7459.9 nm and then progresses to lower wavelengths. What is the wavelength of the 2nd line in the series in nm
A helium-filled balloon has a volume of 2.75 L at 17 C. The volume of the balloon decreases to 2.36 L after it is placed outside on a cold day. What is the outside temperature in K?
Determine the mass of CO_2 produced by burning enough carbon (in the form of charcoal) to produce 490 kJ of heat.
calculate the equilibrium constant from an absorbance value but my professor never told us how to calculate this.
Calculate the concentration of Chloride ion after the addition of 15.00 mL of 0.1000M AgNO3 is combined with 33.00 mL
If a reaction mixture initially contains 0.159 M SO2Cl2 , what is the equilibrium concentration of Cl2 at 227 C?
Write a net ionic equation for the reaction that occurs when aqueous solutions of acetic acid and potassium hydroxide are combined.
Assume that algae need carbon, nitrogen and phosphorus in the atomic ratio 106:16:1. What is the limiting nutrient in the lake that contains the following concentrations: total carbon = 20 mg/L, total N = 0.80 mg/L and total P = 0.16 mg/L.
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