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0.646g of an unknown gas occupies 1.00L when collected over water at 27 °C and 95.00 kPa atmospheric pressure. Calculate the molar mass of the gas.
If the solubility of a gas is 7.5 g/L at 404 kPa pressure, what is the solubility of the gas when the pressure is 202 kPa.
The purity of gold alloys is expressed in karats, which is the mass fraction of gold multiplied by 24. Pure gold is 24 kt, whereas 16 kt gold jewelry typically contains 66.666667% gold, 16.666667% silver and 16.666667% copper (by mass).
If the initial temperature of an ideal gas at 2.250 atm is 62C, what final temperature would cause the pressure to reduce to 1.500 atm
Draw the most probable structure of the tripeptide Ser-Lys-Leu at pH =2, pH = 6 and pH =12.b) , estimate the pI of the tripeptide (use all pK's needed from the pK's table
determine the mass in grams of water that will result in a change in energy of 2.54 kj when water reacts with excess
The isomerization of cyclopropane to form propene is a first-order reaction. At 760 K, 85% of a sample of cyclopropane changes to propene in 79.0 min. Determine the rate constant for this reaction at 760 K
If this cell is allowed to operate, will Ecell increase, decrease or remain constant over time? Briefly explain.
a certain applications requires a mterial that is lightweight an electrical insulator and has some flexibility.a which
Describe the steps to be taken in the laboratory if a large bottle of acetone (noncorrosive, nontoxic, highly volatile, water-soluble, flammable solvent) is broken and spilled.
Rank the following ionic compounds in order of increasing attraction between their ions: BaO, BaCl2, and CaO.
An amount of potassium acid phthalate (KHP) weighs 0.426g (KHP has molar mass of 204.3g/mol and is monoprotic, that is, reacts one-to-one by mole with NaOH) The KHP is dissolved in a small amount of water and titrated with 14.06ml of NaOH. Calcula..
What is the density of a block of marble that occupies 253 cm3 and has a mass of 752 g?
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