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51.0 mL of a 1.30 M solution is diluted to a total volume of 258 mL. A 129-mL portion of that solution is diluted by adding 121 mL of water.
What is the final concentration? Assume the volumes are additive.
When the substance is dissolved in a 1.20x10-3 M solution of HA, the catalyzed rate constant was found to be 3.20x10-5. Calculate the dissociation constant, Ka, of HA.
How would you go about finding how many mL of 2.00 molar NaOH (Aqueous) solution are required to neutralize 1.858 g of KHC8H4O4 (it's formula weight being 204.22)? Any other example would do
1.60 M solution(78.0 mL ) is diluted to a volume of 278 mL and a 139-mL portion of that solution is diluted using 175 mL of H 2 O ,water determine the final concentration?
A compound is constituted by mass of 22.6% phosphorus, the rest being chlorine. Given that a volume of 307 mL of the gas has a mass of 1.55 g at 25 °C and 90 kPa, find the molecular formula for this compound
Propose a mechanism for the acid-catalyzed synthesis of 4,5-dimethyldioxolane + water from formaldehyde
Compute the mass of salt required to bring the freezing point of 200 mL of H 2 O from 0 degrees C to -5 degrees C.
Why do sigma bonds have lower energy than pi bonds and are stronger if bond strength increases with bond energy?
The dimerization of ClO is second order in ClO. Use the following data to determine the value of k and the half-life at 350 K
The decomposition of potassium chlorate (KClO3) is used as a source of oxygen in the laboratory. How much potassium chlorate is needed to produce 20.7 mol of oxygen?
barium hydroxide solution PH = 10.5 is needed. How many grams of Barium hydroxide are needed
An acetate buffer has a pH of 4.40. Which of the following changes will cause the pH to decrease?
Celsius and -125 degrees Celsius , respectively. Calculate the entropy changes for fusion ( solid to liquid) and vaporization (liquid to gas ).
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