An analytical chemist determines that an estuarine water sample contains 1.5 g/L of sulfate ion.
An analytical chemist determines that an estuarine water sample contains 1.5 g/L of sulfate ion. What is the concentration in terms of (a) g/L of S (b) molar concentration of sulfate (c) normality (d) parts per million of sulfate Could you please explain what formula and step are invovled and please provide (e ...continues
Could you please explain what formula and step are invovled and please provide (example) if possible? The average pH of precipitation in rural areas is 5.70. Assuming that the pH is controlled by the carbonate system, i.e., no anthropogenic acid gases are present in the atmosphere, calculate the amount of calcium carbonate (m ...continues
Could you please explain what formula and step are invovled and please provide (example) if possible A stoppered flask at 25 C contains 250 mL water, 200 mL octanol, and 50 mL of air. An unknown mass of o-xylene is added to the flask and allowed to partition among the phases. After equilibrium has been established, 5.0 mg of ...continues
Could you please explain what formula and step are involved and please provide (example) problem if possible Assume that due to dwindling supplies of crude oil and natural gas, the US embarks on a plan to implement the "hydrogen economy" for which hydrogen will be generated by electrolysis of water. The source of electricity ...continues
Chemical Reaction - Find unknown mass
A stoppered flask at 25 C contains 250 mL water, 200 mL octanol, and 50 mL of air. An unknown mass of o-xylene is added to the flask and allowed to partition among the phases. After equilibrium has been established, 5.0 mg of o-xylene are measured in the water. What is the total mass (g) of o-xylene present in the flask?
The half-life of tritium is approximately 12 years.
I have been stuck on this problem for ever! I am not good with ratios and I have no idea what equation I need to solve this problem. Please help, thank you. The half-life of tritium is approximately 12 years. What will be the molar ratio of tritium to helium-3 in a sealed sample after 25 years?
I am trying to figure this out but I don't have an measurement for water. Does that matter? Also, can I use the henderson hasselbalch equation to solve this? I need help with the setup of this problem. Thank you. In manufacturing a fruit drink, citric acid is added to water in the amount of 0.1 mol/L. What is the pH of the re ...continues
Im confused on how to set this problem up while incorporating the water, octanol, and air in one equation so I can solve for the mass. Help is much appreciated! thank you A stoppered flask at 25 C contains 250 mL water, 200 mL octanol, and 50 mL of air. An unknown mass of o-xylene is added to the flask and allowed to partit ...continues
How much Fe++ could be present in water containing 1.2 x 1e-02 M HCO3- (bicarbonate) without causing the precipitation of FeCO3 (Ksp=10**(-10.7)) Hint: carbonate equation.
Im confused on how to do this problem all together. I can't find help in the book because their answers are hard to follow. If you could work this out and explain how each step was done so I could understand how to do it that would be awesome. Thank you Given that the average TEQ of animal-based foods is about 0.7 picograms o ...continues
