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Ion Conc. Units Cl- 18.980 ‰ Na+ 10.560 ‰ SO42- 2.560 ‰ Mg2+ 1.272 ‰ Ca2+ 0.400 ‰ K+ 0.380 ‰ HCO3- 0.142 ‰ Br- 0.065 ‰ B(OH)4- 4.6 ppm Sr2+ 13 ppm O2 ? F- 1.4 ppm Rb+ 0.2 ppm Al3+ 0.17 ppm Li+ 0.1 ppm Ba2+ 0.05 ppm I- 0.05 ppm A scientist wishes to prepare a one-liter sample with the approximate composition of seawater for use in the laboratory. What reagents would you recommend and what mass of each one would you use to match the concentrations of Na+, Cl-, Mg2+, Ca2+ and SO42- given in the table above? Do not include ions that are not listed in the table. You might want to think about how seawater came to have the composition we observe.
A certain type of sugar dissolves in water, but the solution created does not conduct electricity. Therefore, the sugar does not form ions when dissolved in solution.
A bag of potato chips contains 595 mL of air at 30.0 degrees celcius and a pressure of 770 mm Hg. Assuming the bag does not break, what will be its volume at the top of a mountain where the pressure is 438 mL and the temperature is 8.00 celcius?
If 164 mL of wet H_2 is collected over water at 24 C and a barometric pressure of 736 torr, how many grams of Zn have been consumed? (The vapor pressure of water is 22.38 torr.)
what is the annual cost of operation in a 70°F room if the door is opened 10 times a day with an average heat gain per opening of 200 kJ? How much would it cost to keep the inside at 35° F? Show work.
Find the mass of the substance and the volume of a gas in a reaction - determine the mass of solid ammonium nitrate that must be used to obtain 0.145 L of dinitrogen oxide gas at STP.
Arrange the four compounds below in order of increasing volatility.
Explain why the atomic mass of an atom is a decimal number and how that value was determined before being placed on the periodic table.
Nitartion of ferrocene not possible why, Ferrocene cannot be nitrated using the conventional HNO3-H2SO4 mixed acid conditions, even though nitration is an electrophilic aromatic substitution reaction. Explain.
a TIre has a volume of 535 cm3 at a temprature of 20 c while in use the temprature of the tire rises to 65 c calculet the new volume of the tire assuming a constant pressure and amount of air?
if you mix 40.0 mL of 0.366 M of K2CrO4 with 40.0 mol of 0.366 AgNO3. what mass of solid Ag2CrO4 would form?
You have 250.0 ml of 4.00 M sugar solution. You add 217.3 ml of water to this solution. Determine the concentration of the sugar solution after the water has been added
What is the wavelength of a photon of electromagnetic radiation having a photon energy of 4.56X10^-19 J? Report your answer in nanometers, to the correct number of significant figures.
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