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Explain drawing the key resonance contributor of one or both of the conjugate bases as well as curved arrows showing how formed the contributor
You need to dissolve CaCl2 in water to make a mixture that is 41.0% calcium chloride by mass. If the total mass of the mixture is 363.9g what masses of CaCl2 and water should be used
What mass of gold is produced when 12.8 A of current are passed through a gold solution for 44.0 min. Express your answer with the appropriate units.
Calculate the boiling point of a solution prepared by dissolving 70.0 g of naphthalene, C10H8 (a nonvolatile nonelectrolyte), in 220.0 g of benzene, C6H6. The Kb for benzene = 2.53°C/m. The boiling point of pure benzene is 80.1°C.
In an insulated container, a hot piece of iron (cp =0.4513 J/g-C) at 1490. C was added to 200. g of water (cp =4.184 J/g-C) at 20. C. The temperature of the resulting mixture became 90. C. What mass of iron was present?
classify each of the following as oxidation or reduction: a)electrons are gained b)requires a reducing agent c)Ni(s)>Ni^2+(aq) d)MnO4^-(aq)>MnO2(s) e)Sn^4+(aq)>Sn^2+(aq)
A certain substance has a heat of vaporization of 64.56 kJ/mol. At what Kelvin temperature will the vapor pressure
Which satisfy the octet rule and which do not? PS3, SO2, SO3, NO3-1, CO3-2, PCl5
What percentage, by volume, is needed of ethylene gylcol in an ethylene gylcol-water mixture to keep the coolant in your radiator from freezing at a temperature of -20F
Compound B has molecular formula C6H10O and does not possess any bonds. When treated with concentrated HBr, cis-1,4-dibromocyclohexane is produced. Identify the structure of compound B.
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 colume becomes 477 mL. If there had been no change in temperature, what is the new pressure?
Describe how you will separate the following mixture of ions in solution. Include an explanation/rationale of the reagent used, etc. a. Na+ , Al3+, Ni2+, Sr2+
The higher heating value (HHV) of a fuel is its standard heat of combustion at 25 C with liquid water as a product; the lower heating value (LHV) is for water vapor as product.
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