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A beaker with 200 mL of an acetic acid buffer with a pH of 5.00 is sitting on a benchtop. The total molarity of acid and conjugate base in this buffer is 0.100 M. A student adds 6.40 mL of a 0.400 \it M \rm HCl solution to the beaker. How much will the pH change? The pKa of acetic acid is 4.760.
If 100mL of 0.01 M CaCl2, 100mL of 0.01 M Sr(NO3)2 and 100 mL of 0.01 M Na2SO4 are mixed together; what is the Ca2+ concentrationin solution and which precipitates will form?
Identify the element or elements that undergo
How would the presence of a double or triple bond help to determine the geometric shape of a molecule?
if a sample containing 2.11 ml of nitroglycerine density 1.592 gml is detonated how many total moles of gas are
Determine what is the final volume the gas occupies If the pressure of a gas inside the cylinder changes from 840.0 mmHg to 360.0 mmHg,?
A student mixes 347 mL of water and 254 mL of 8.70 x 10-5 M greenfood dye solution. What is the concentration of this new dilute solution of green food dye?
Calculate the number of grams of sucrose (C12H22O11) needed to prepare 0.500 L of a 1.00 M sucrose solution. 1. 85.5 g 2. 171 g 3. 342 g 4. 684 g
How many milliliters of a solution that is 10.53% H3PO4 (w/w) with a density of 1.1928 g/mL should be diluted in order to make 4.50 L of a 0.100 M H3PO4 solution
Supposed you have a beaker of water that is being heated on a hot plate. If you are studying the amount of heat that is requred to change the water temperature by a certin amount. What is a reasonable choice for the system and surroundings?
The equivalence point of the titration occurs at 23.74mL . Determine the molar mass of the unknown acid.
A scientist wants to make a solution of tribasic sodium phosphate, , for a laboratory experiment. How many grams of will be needed to produce 250 of a solution that has a concentration of ions of 0.700
Given the three formation equations and their enthalpy values, calculate the enthalpy of the given reaction.
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