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What properties are important for a solvent to be used to extract a compond from an aqueous solution and when carrying out an extraction, what are the advantages/ disadvantages of having your extraction solution more/less dense than water?
What is the energy required to change a spherical drop of water with a diameter of 1.40 mm to two smaller spherical drops of equal size?
Each of 2 front tire in the car is filled with a different gas. One tire contains 116g of helium, another tire has 160g of unknown gas. How many times heavier is a molecule of the unkown gas than an atom of helium.
unchanged, or less if the residue was washed with hot distilled, deionized water instead of cold distilled deionized water
Explain what a hydrogen bond is and describe, on the molecular level, how a water and an alcohol molecule can hydrogen bond
How many milliliters of 0.105 M HCl are needed to titrate each of the following solutions to the equivalence point:-- 45.0 mL of 0.0950 M NaOH
aluminum has the mass of 8.37g. when it is placed in a graduated cylinder containing 20.0mL of water, the water level rose 23.1mL. calculate the density and specific gravitas of the object.
What is the pressure in psi for a pressure head of 46.2 feet? What is the pressure in psi for a pressure reading, in psi, at the bottom of a 30 feet high reservoir, which has a diameter of 50 feet?
Determine the molecular formula of the compound with molar mass 336.5g mol-1 and empirical formula C 5 H 8 O?
A 12.0g- sample of a gas has a volume of 5.25g at 28 celcius and 757mmHg If 2.7g of the same gas is added to this constant 5.25L- volume and the temperature raised to 64 celsius, what is the new gas pressure?
Given that the pKa for Acetic Acid is 4.77, calculate the expected pH of the buffer solutions using the Henderson-Hasselbalch equation and the concentrations of Acetic Acid and Acetate added to the 250 ml Erlenmeyer flask.
What is a meniscus? Why do some liquids develop a meniscus? How do we read the liquid level in a volumetric measuring device
A gas held at 798 mmHg in a 400 mL flask is released into a 3 L flask.Whats the new gas pressure?
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