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Compute the pH of a buffer solution prepared by dissolving 4.2 g of NaHCO3 and 5.3 g of Na2CO3 in 0.20 L of water. Explain will the pH of the solution change if the volume is increased by a factor of 10? Explain.
If i use 0.212 g of benzaldehyde, 1.6ml of a solution containing 58 mg of acetone in ethanol. what is my mols of benzaldehyde and what is the mols of acetone. how do i determine the moles for acetone if its ethanol.
a what is the ground state energy of the electron in a hydrogen atom expressed in units of electron volts ev?b what is
Outline a detailed scheme utilizing extractions that he can use to separate the mixture back into the pure components before the professor finds out.
Kr (g) in a 18.5 L cylinder exerts a pressure of 11.2 atm at 28.2 °C. How many grams of gas are present
A similar experiment was conducted using calcium hydrogen tartrate. 25.27 mL of .0524 M NaOH was needed to react with 35.00 mL of the calcium hydrogen tartrate solution. What is the Ksp of calcium hydrogen tartrate
find the volume of aqueous acetic avid required to prepare an effective buffer solution when 8.2 grams of sodium acetate is used. Assume 500mL is required for the buffer solutions and also find the pH of the buffer.
What is the final temperature of the sand A 1.00 kg gold bar at 1010 K is dropped into 0.750 kg of sand at twenty five degree Celsius?
Using the arhennius equation to plot ln(equilibrium constant) vs. 1/Temperature, how can we determine the enthalpy of reaction
10g of ethane (C2H6) is burned to heat 100g of water. What would be the final temperature of the water if it was initally at 24 degrees Celsius
Why is modulating ligand concentration not sufficient for adequate control of signaling in an organism? Sketch a diagram of a G-protein coupled receptor cascade, and indicate the possible actions that can be taken by a cell to inhibit the signal.
During the initial stages of method development, the researcher was unable to separate anthracene and naphthalene with baseline resolution. From the options below, select all possible modifications the researcher could make to improve the resoluti..
Aluminum nitrate and ammonium chloride react to form aluminum chloride, nitrogen, and water. what mass of aluminum chloride is present after 74.7 g of aluminum nitrate and 56.8 g ammonium chloride have reacted completely.
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