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Draw resonanc contributors for the following species. Indicate which are major contributors and which are minor contributors to the resonance hybrid:
a)CH3-CH=CH-OCH3
b)CH3-CH=CH-CH=CH-CH2
A sample of nitrogen gas is contained in a piston with a freely moving cylinder. At 0 C,the volume of the gas is 361 mL. To what temperature must the gas be heated to occupy a volume of 492 mL.
The solubility of a gas is 0.34 g/L at STP. What is its solubility at a pressure of 0.80 atm and the same temperature?
A compound of bromine and fluorine is used to make UF6, which is an important chemical in processing and reprocessing of nuclear fuel. The compound contains 58.37% by mass of bromine. Determine its empirical formula.
SO3 can be produced in the following two-step process: FeS2 + O2 ---> Fe2O3 + SO2 , SO2 + O2 ----> SO3 Assuming that all the FeS2 reacts, how many grams of SO3 are produced when 20.0 g of the FeS2 reacts with 16.0 g of O2?
For each of the following unbalanced equations calculate how many moles of the second reactant would be required to react completely with 0.413 mole of the first reactant. Al + H20SO4 ----> Al2(SO4)3 + 3H2
Rhombic sulfur turns into monoclinic sulfur, Calculate the transition temperature for this change at a pressure of 1 bar.
the heat formation of Al2O3(s) is delta H final is -1669 kj/mol. calculate the heat evolved when 0.267 g of Al burns in oxygen
what is the underlying electronic reason for all periodic trends?
What mass of barium sulfate is produced when 100.0 mL of a 0.100 M solution of barium chloride is mixed with 100.0 mL of a 0.100 M solution of iron(III) sulfate.
Calculate the root mean square velocities of Cl2(g) and O2(g) molecules at 263 K and 505 K.
sodium 24 has a half life of 15 hours. how much sodium 24 will remain from a 10.0-g sample after 60 hours?
A 280ml flask contains pure helium at a pressure of 754 torr . A second flask with a volume of 475ml contains pure argon at a pressure of 732 torr . If the two flasks are connected through a stopcock and the stopcock is opened, what is the partial..
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