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Problem- A puddle of coastal seawater, caught in a depression formed by some coastal rocks at high tide, begins to evaporate on a hot summer day as the tide goes out. If the volume of the puddle decreases to 26% of its inital volume, what is the concentration of Na+ after evaporation if initally it was 0.449 M?
I am not able to determine the correct answer for the above question please helps me to get the correct answer
If the temperature of a sample of gas with an initial volume of 1.75 is increased form 15.0 c to 30.0c, what will the final volume be.
Seven tiny spheres of liquid mercury each have a diameter of 2 millimeters. They are now added together and coalesce into one larger drop. What is the diameter of this larger drop?
63.0 mL of a 1.20 M solution is diluted to a volume of 208 mL. A 104-mL portion of that solution is diluted using 157 mL of water. What is the final concentration.
Assume that each photon has sufficient energy to eject one electron. (Note currents are reported as positive values.)
Calculate the volume of the acid solution needed to completely neutralize the base in the flask, 2.Calculate the pH for the initial base solution in the flask ;the point at which 20mL of the acid has been added ; equivalence point and the point at..
in addition to the main product what are two side reactions that could occur in the experiment of the diels-alder
Compound X (C 8 H 12) produced 1, 5 - cyclooctadione while subjected to KMnO4. Depict the structure of Compound X
Sketch an approximate titration of an NaOH solution with standardized HCl solution. Briefly explain the shape of the curve before the equivalence point, at the equivalence point, and after the equivalence point.
Dry air (0% humidity) is approximately 78% N2, 21% O2, and 1% Ar by moles. Calculate the molar mass and density of dry air at 0 °C and 1.0 atm. Assume ideal behavior and use two significant figures in your answers.
What is the voltage at 25degrees C for the Voltaire cell of Ni and Ag electrodes if the Ni electrode is dipped into solution of .05 M NiCl2 and the Ag electrode is dipped into a solution of 2M AgNO3
Silica gel is a common chromotography stationary phase. What is silica gel? Why is it a preferred media for the stationary phase. why is silica gel more commonly used for the separation of polar compounds. what major disadvantage does silica gel h..
Define what volume of fuel should you bring? Assume each of the following the fuel has an average formula of C7H16; 15% of the heat generated from combustion goes to heat the water
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