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An aqueous solution containing 35.9g of an unknown molecular (nonelectrolyte) compound in 159.9g of water was found to have a freezing point of -1.3 Celcius. Calculate the molar mass of the unknown compound.
the following compounds has the highest boiling point and which has the lowerst boiling point? explain your answer. a- CH3OCH3 b- CH3COOH c- CH3CH2CH3
Which of the following statement correctly identifies three proteins that appear in the blood as a result of an occluded coronary artery that led to a myocardial infarction (MI)
Draw the general reaction scheme for an amino acid reacting with ninhydrin and then draw the structures for each component in the solvent system of the following:
Describe three ways to could make and acetic acid/acetate buffer with acetic acid, sodium acetate, deionized water, a solution of hydrochloric acid and a solution of sodium hydroxide.
A solution is made by dissolving 25g of NaCl in enough water to make 1.00 L of solution. Assume that the density of the solution is 1.00 g/cm3. Calculate the mass percent, molarity, molality, and mole fraction of NaCl
it is given that the mobility of free electrons and holes in pure germanium are 0.38 and 0.18 m2v-s. find the intrinsic
It is possible to write four resonance structures for the azide ion, N3-, all of which satisfy the octet rule (write them all). However, experiential evidence shows that the azide ion has linear shape, with equal nitrogen-nitrogen distances
An 18-karat gold necklace is 75% gold by mass, 16% silver, and 9.0% copper. How many grams of copper are in the necklace? If 18-karat gold has a density of 15.5
Lewis Structure for a Nitrate Ion (NO3-1). Assign the formal charge for the central atom, Nitrogen. What is that formal charge
discrete inquires at a company situated on the lake and employee confesses to you that they have been dumping 89 g/min for years but that the dumping has now stopped. If lake has a residence time of 100 days, the flowrate into the lake is 10 m3/s,..
a testing facility found that 8.351023 molecules of carbon dioxide were produced when a sample of octane was burned in
the osmotic pressure of the solution at 25C is found to be 0.614 mbar. Calculate the molecular mass of immunoglobulin G.
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