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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.
Sodium atoms(Na) emit light with a wavelength(λ) of 330 nano meters when an electron moves from a state of 4 p orbital to a state of 3 s orbital now you just need to determine the energy difference between the orbitals.
If 5.00 ml of a solution containing .0400 M iron is placed in a 100.0 ml volumetric flask and filled to the mark with deionized water, what will be the concentration of iron in this new solution?
What is the theoretical yield of SO 3 produced by the quantities described in Part A and How many Oxygen molecules are required to react with 7.82g of S?
Calculate the specific heat was? Would your computed specific heat be , too low, too high or not affected if you had not dried the metal before placing it into the Styrofoam cup. Explain your answer?
Assume that a particular reaction evolves 243 kJ of heat and that 28 kJ of PV work is gained by the system....? 1) What are the values of delta E and delta H for the system? 2) What are the values of delta E and delta H for the surroundings?
A 3.5g sample of water reacts with PCl3 according to the following equation: 3H2O+PCl=H3PO3+3HCl How many g of H3PO3 are produced.
Two vessels are labeled A and B. Vessel A contains NH3 gas at 73 degrees C and vessel B contains Ne gas at the same temperature. If the average kinetic energy of NH3 is 7.1 10-21 J/molecule at 70 degrees C.
a 365.0g sample of water,contains 23mg Au. How much gold is present in the sample in parts per million?
Green light of a wavelength 516 nm is absorbed by an atomic gas. What is the energy difference between the two quantum states involved in the transition.
what is the energy in joules of a mole of photons with visible light of wavelength 486nm.
The temperature of a 35.2 g sample of iron increases from 23.7 °C to 29.5 °C. If the specific heat of iron is 0.450 J/g-K, how many joules of heat are absorbed?
slower than Friedel-Crafts alkylation of benzene and gives a mixture containing mostly o- and p-tert-butyltoluene. d. slower than Friedel-Crafts alkylation of benzene and gives mostly m-tert-butyltoluene.
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