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A specific proton in an organic compound has a chemical shift of 3.4 in 60 MHz spectrum. What will the shift be using a 90 MHz spectrum?
Equal initial pressures of hydrogen and nitrogen are added to a container at 298K where they react as in question 1. (question 1 is at the end) a. If the equilibrium pressure of hydrogen is 1.5 atm, determine the equilibrium pressures of nitrogen a..
what is the term for a substance that is capable of either accept or donate a proton in as which base reaction?
a gas occupies a volume of 458 ml at a pressure of 1.01kpa abd temperature of 295 k. when the pressure is changed the
In a separate experiment, it was found that, for fixed temperature and pressure, a 0.100 L sample of this compound takes 1.73 times longer to effuse than does a 0.100 L sample of Ar(g). What is the molecular formula of the compound? , draw possibl..
A sample of pure NO2 is heated to 338 degrees C at which temperature it partially dissociates according to the equation
An impure sample of sodium carbonate, Na2CO3, is titrated with 0.150 M HCl according to the reaction below. 2HCl(aq) + Na2CO3(aq) yields CO2(g) + H2O(l) + 2NaCl(aq)
when making ice cream, the temperature of the ingredients is decreased to below the freezing point of pure water by using a surrounding water bath that contains a large amount of table salt, NaCl.
a 75.0 mL sample of potassium hydroxide, KOH, of unknown concentration is titrated with 42.5 mL of 0.575 M acetic acid. How many moles of KOH were in the sample?
suppose .015 g of dichlorobenzene was combined with 10 ml ofdiethyl ether. this mixture was used to spot a tlc
The isotope 22Na has a half-life of 2.60 years. How much of a 1.00 gram sample would be left after 1.00 yr
calculate the molar enthalpy of evaporation of water at 100 celcius?
A single Lewis structure for the phosphate ion (), assuming that the phosphorus atom can expand its octet such that the formal charge on each of the atoms is minimized
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