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If the standard for CaCO3 in drinking water is 80 - 100 mg/L, and the value calculated from the unknown sample contains 59.3 ppm CaCO3, how much calcium chloride should be added to make the sample compliant with the standard?
Draw the expected trend in the melting temperatures for the lanthanides starting with La and ending with Yb. Support your conclusions by showing the DOS and bonding character plots for the element with the highest melting temperature.
A 100.0 mL sample of 0.10 M NH3 is titrated with 0.10 M HNO3. Determine the pH of the solution after the addition of 50.0 mL of HNO3. The Kb of NH3 is 1.8 × 10-5.
Which should the highest vapor pressure at a given temperature?
Acetic acid solution is titrated with NaOH solution. What is the pH at half the euivalence point?
Explain how DNA fragments can be separated. Name a practical application for visualizing separated DNA fragments
How can you assume that a pickle contains approximately the same amount of salt as the juice it is soaked in? Explain
The specific rate constant for the decomposition of NO2 is 0.755 M-1s-1 at 330 degrees Celsius as well as 4.02 M-1s-1 at 378 degrees Celsius. Explain what is the activation energy for the reaction
For this assignment, you are to evaluate the challenges of use of project management tools within a particular project-based organization.
what is the solubility in pure water of baio32 in moles per liter at 25 ?c ksp 25 ?c 6.0 ?
0.375 kg of water are in a well insulated container at 21.3 c. After 4.184kj of heat are added to the water, what is the final water temperature ?
A solution is made up by dissolving 73 g of glucose in 966 g of water. Calculate the activity coefficient of glucose in this solution if the solution freezes at -.66 degrees C.
A second order reaction of the type A + B--> P was carried out in a solution that was initially .075 mol dm^-3 in A and .050 mol dm^-3 in B. After 1.0 h the concentration of A had fallen to .020mol dm^-3 a)Calculate the rate constant b)What is the..
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