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Problem- A buffer is created by combining 150.0mL of 0.25M HCHO2 with 80.0mL of 0.25M NaOH. What is the pH?
If possible just a brief explanation how you got the answer?
Calculate the change in temperature for 1.30 g of CaCl2 dissolved in 25.0mL of H2O. Assume that the calorimeter absorbs no heat.
The following choices list some common laboratory solvents. In which of these solvents would LiCl be the LEAST soluble
Why is it not possible to use acetic acid rather than formic acid in the Eischwieler-Clarke reaction
What chemical reaction takes place when solid sodium sulfide is dissolved? Explain by writing the chemical equation. Include physical states for all species (including liquid for water).
What is the concentration (in M) of the nitrate ion when 18.4 mL of a 0.744 M solution of sodium nitrate is combined with 15.9 mL of a 0.734 M solution of copper(II) nitrate? Assume the volumes are additive.
Celsius and takes 96 seconds. How long would you expect the reaction to take if ran at 50 degrees Celsius?
the solubility product for ceriumiii fluoride is 8.0 x 10-16a what is the molar solubility of cerium iii fluoride in
You have a protein that undergoes conformational change from folded state(F) to unfolded state(U) depending on pH. For each state draw a graph for how scattering intensity might change with time.
Explain what is the pH of a sodium acetate solution prepared by adding 0.820 grams of sodium acetate to 100.0 ml of water at 25.0oC? The Ka at 25.0 oC for acetic acid is 1.8 × 10-5
Explain what is the pH of an acetate buffer in which the [CH3CHOOH]/[CH3COO-] ratio is 1:5? pKa acetic acid is 4.76
For the compound MX, Ksp is 2.00 × 10-11. The anion X- forms the weak acid HX (Ka = 1.8 × 10-5). Calculate the solubility of MX in 10.00 M strong acid
The decomposition of N2O to N2 and O2 is a first- order reaction. At 730°C the half-life of the reaction is 3.58 3 103 min. If the initial pressure of N2O is 2.10 atm at 730°C, calculate the total gas pressure after one half-life.
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