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Explain what is the mole fraction of solute and the molal concentration for an aqueous solution that is 10.0% NaOH by mass?Define what is the m?
before the civil war the south graded with the north and with england. it sold cotton and bought manufactured goods
What mass of sucrose should be combined with 493 g of water to make a solution with an osmotic pressure of 9.00 atm at 320 K? (Assume the density of the solution to be equal to the density of the solvent.)
The electron in the n=1 state of a hydrogen atom absorbs a photon with an energy of 2.12x10^-18 J. What is the final state of the electron
Pick and element or compound and state how many grams of that substance are needed to have a mole of that substance.
1 in the reaction where the potassium chlorate is decomposed into potassium chloride and oxygen. how much oxygen can be
how many grams of sucrose C12H22O11 must be added to 522g of water to give a solution a vapor pressure 2.0mmHg less than that of pure water at 20 degrees celsius
A 706 mL gas sample at STP is compressed to a volume of 248 mL, and the temperature is increased to 39?C. What is the new pressure of the gas in Pa.
Derive the relationship between the total energy and the molecular partition function for indistinguishable particles.
Centuries before any experiments had been carried out, philosophers had proposed the existence of the atom. Why are the proposals of these philosophers not considered theories?
suppose that you are given a 0.700 m acetic acid solution and a 0.500 m sodium acetate solution. determine the volumes
Which of the following combinations of terms best describes teh plymerization of a diisocyanate and a diol to form a polyurethane? A) step growth condensation B) chain growth condensation
A sample of helium gas has a volume of 8.23 L at 258.8 K and 2.049 atm. How many helium molecules does it contain
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