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Acid rain is a worldwide environmental issue. You collect a sample of potentially acidic rainwater and submitted to analyze. Several acidic ions were found in the solutions and the concentrations were shown below: Total inorganic carbon = 0.1 mg-C/L [Cl-] = 0.7 mg/L as Cl [NO3-] = 0.6 mg/L as N [SO42-] = 0.5 mg/L as S (Note: TIC is the total concentration of carbon dioxide) Please calculate the pH value of the rainwater.
The student then titrated 25ml of the same buffer with 0.1115M NaOH. The observed titration curve is shown before. what is the concentration of the weak acid in the buffer?
If solar radiation is 1200 W/m^2 , how many photons strike the leaf every second? Assume three significant figures and an average wavelength of 504 for solar radiation. A green leaf has a surface area of 2.15 cm^2.
A 2.32 L balloon contains helium at 1.00 atm and 25°C. How many grams of helium are contained in the balloon.
A 100.0 g sample of water at 90.°C is added to a 500.0 g sample of water at 10.°C. Calculate the final temperature of the water.
What is the wavelength of light having a frequency of 5.4 x 10^13 Hz? What is the frequency (in Hz) oflight having a wavelength of 8.26 x10^2 nm?
What pH is needed to increase the solubility of Mn(OH)2 to 2.5 x 10-3M? Ksp for Mn(OH)2 = 1.6 x 10-13.
The barometer in the lab has a 626mm column of mercury and the thermometer reads 26degrees celsius. Given that air is 78% by volume nitrogen, what is the density of nitrogen in the lab. Can you do your experiment or should you just go home
Determine the subunit composition of this protein from the following information: 10 points Molecular mass of the native proteinby gel filtration is 300 kD Molecular mass by SDS-PAGE
What is the order of increasing polarity of the compounds: benzophenone, trans-stilbene, 2-naphthol, benzoic acid
Find the appropiate equilibrium constant (Kp) for the reaction below under the following conditions.
What is the electron-pushing mechanism for the aldol condensation reaction of benzaldehyde and acetone forming dibenzalacetone
Interperation of the data plots consistently show that the freezing points of three solutions are too high. As a result of this "misreading of the data ". Will the reported molar mass of the solute be too high, too low or unaffected
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