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When 2.56g of a compound containing only carbon, hydrogen, and oxygen is burned completely, 3.84g of CO2 and 1.05g of h20 are produced. What is the empirical formula of the compound?
In the preparatoin of a new pain reliever calls for 1.8 moles of an organic compound with fomula Na2(CH2CO2H)2 NCH2CH2(CH2CO2)2. How many grams of this compound should be weighed out for the reaction
note that the integrals for some of the resonances in the 1h nmr spectrum are higher than they should be due to the
To be effective, intracellular signaling molecules must be inactivated/removed when their effects are no longer needed. Provide the methods by which this occurs for the following classes of intracellular messengers
What mass of C4H6 in grams is consumed in the reaction below when 36.9 grams O2 (g) are also consumed?
Vacuum pumps can achieve very low pressures. If a vacuum pump can generate a vacuum of 1 nTorr at 25 °C, and assuming that air consists of N2 molecules with a collision diameter of 395 pm
C3H8 + 5O2 reacts to yield 3CO2 + 4H2O +488 kJ What is the heat released if 2.5 moles of C3H8 reacts completely with oxygen?
a sample of gas occupies a volume of 364 ml at 1.28 atm and 27 oc. calculate the volume of the gas if its temperature
A solution is prepared by adding some solid CaF2 to water and allowing the solid to come to equilibrium with the solution. The equilibrium constant for the reaction below is Kc = 3.9x10-11.
Calculate a lattice energy for CaH2(s) in kilojoules per mole using the following information: (a) Eea for H(g) = -72.8kj/mol. (b) Ei1 for Ca(g) = +589.8kJ/mol.
If someone can go in depth into finding the Ka to this and then guiding me through the rest of the steps, I'd be eternally grateful
The amount of heat needed to raise the temperature of 25 g of a substance by 15°C is 915 J. What is the specific heat of the substance?
The solute increases the volume of the solution, and an increase in volume requires an increase in the temperature to reach the boiling point (derived from PV = nRT).
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