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In a seperatory funnel you have 2 phases with both liquids being clear and having roughly the same volume. You know one of them is a dilute sodium chloride solution and anohter is hexane. If you are interested in obtaining the hexane and discarding the sodium chloride solution, what would you do and why?
a 2.2 g sample of an unknown acid with an empirical formula of c3h4o3 is dissolved in 1 l of water. it requires a 25 ml
The total molarity of acid and conjugate base in this buffer is 0.100 M . A student adds 5.90 mL of a 0.380 M HCl solution to the beaker. How much will the pH change. The pKa of acetic acid is 4.760.
It takes 10 microliters of solution to produce a spot 1 cm in diameter. If the co(no3)2 solution contains about 6g co2+ per liter, how many micrograms of co2+ ion are there in one spot
A large cylinder of He gas,such as that used to inflate balloons,has a volume of 25.0 L at 22 Celsius and 5.6 atm. how many moles of He are in such a cylinder ?
A 290 mL stock solution contains 2.3 M Ca(CN)2. When 100 mL of the stock solution is diluted to 125 mL, how many moles of CN- ions will be contained in the dilute solution
Calculate the heat in joules when 89.19 g of ice at 100.0 K is turned into liquid water at 10.0 degrees Celsius
Calculate the temp of an argon sample at 55.4 kpa and 18.6L if it occupies 25.8 L at 75 degrees C And mass of 16g
If 3.8kcal of energy is released when 1 gram of glucose is combusted, how many kcals are released when 0.689 moles of glucose are combusted
Given 5.2 g of hydrobromic acid (48%) calculate the number of mL. (MW HBr: 80.91 g/mol, density: 1.49 g/mL) I am getting 1.675 but it is counting it wrong. Anyone else getting something different
A student find out the mass percent of Ni is 29.7%, NH3 is 34.4%, and Cl is 35.9% in a compund containing Nickel, ammonia, and chlorine. The empirical formula of the compund is
Propane, C3H8, when used as a fuel, reacts with oxygen gas to produce carbon dioxide and water. What mass of oxygen will be required to react with exactly 14.05 grams of propane?
What can make the titrated solution at the equivalence point in an acid-base titration have a pH not equal to 7
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