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A beaker with 145 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 7.50 mL of a 0.350 M HCL solution to the beaker. How much will the pH change? The pKa of acetic acid is 4.760.
Calculate the moles and the mass of solute in 250.0 mL of 6.00 M NaOH.
An aqueous solution contains 12.7% NaCl by mass. What mass of water (in grams)is contained in 2.5L of the vapor above this solution at 55 celcius? the vaor pressure of pure water at 55 celcius is 118 torr.
What the Ideal and Van der Waals Pressure of ethane gas at temperature of 500K and Molar Volume of 7.28 x 10^-5 m^3/mol?
The solvent for an organic reaction is prepared by mixing 60.0 of acetone () with 56.0 of ethyl acetate (). This mixture is stored at 25.0 . The vapor pressure and the densities for the two pure components at 25.0. What is the vapor pressure of th..
What is the mass of CO2 in one liter of water if the pressure above the water is 2 atm? (MW CO2 = 44 g/mol), Cg = kH Pg Please show steps
what is the molecular formula of a compound with a percentage composition 26.7 p 12.1 n and 61.2 cl and a molecular
How many grams of potassium accetate must be added to 2.5 L of .250 M acetic acid
A balloon filled with H2(g) at STP has a volume of 2.24 .What is the final gas volume if 0.10 mol He(g) is added to the balloon and the temperature is then raised to 92.0 celsius while the pressure and amount of gas are held constant?
What is the correct electron configuration for copper Answer a. [Ar]4s23d8 b. [Ar]4s23d9 c. [Ar]4s13d10 d. [Ar]3d10 e. [Ca]3d9
Determine the molarity of Ni in the 20.0 mL solution. Determine the mass in grams of Ni in the original sample. Determine the weight percent of Ni in the sample.
what are some differences and similiarities in the type of inhibition caused by heat acid or base and heavy metal ions
a solution is prepared by dissolving 15.0g of nh3 in 250g of water. the density of resulting solution is 0.974gml.
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