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About 6*109 g of gold is thought to be dissolved in the oceans of the world. If the total volume of the oceans is 1.5*10 21 L. Define what is the average molar concentration of gold in seawater?
What is the oxidation number of chlorine atom in Clo- c)What is the oxidation number of manganese in MnO2
Discuss how to prepare the soltion starting from 0.100 M formic acid and 0.150 M sodium formate
What is the net ionic equation for the reaction of an iron ion in solution mixed with NH3 resulting in a percipiate of Fe2O3
use the van der waals equation to calculate the pressure of 4.21L CO(g) at 300°C. (a= 1.472 bar L^2mol^-2 and b=0.0395L mol^-1)
You have 100.0 mL of a solution of hydrochloric acid that has a pH of 3.00. You add 100.0 mL of water to this solution. What is the resulting pH of the solution?
A solution is known to be 23 percent by volume rubbing alcohol (isporpanol). How many mililiters of isopropanol would be in 250 mL of solution. 25 percent
to obtain the same antifreeze protection requires 76 of propylene glycol to replace each 62 of ethylene glycol.
A certain substance has a heat of vaporization of 39.67 kJ/mol. At what Kelvin temperature will the vapor pressure be 3.50 times higher than it was at 323K
We titrated each layer with 0.10 NaOH and found that 1. took 2.57 mL of NaOH to titrate and 2. took 0.08 mL of NaOH to titrate. What is the concentration of acid in 1 and 2?
What is the pH at the equivalence point when 20.0 mL of 0.20 M CH3NH2 is titrated with 0.40 M HCl? Kb = 4.4 × 10G4 for CH3NH2.
during one of the processes at the plant. The two liquids are blended until a specific gravity of 1.445. Determine the mole percentage of the two components in the blend.
In fermentation of glucose, 780 mL of CO2 gas was produced at 37 degrees C and 1.00 atm. What is the volume(L) of the gas when measured at 22 degrees C and 675 mmHg?
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