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Write the word equation for a reaction which could be used to make this ester : CH3(CH2)2COOCH2CH3

Ethanol and Butanoic acid are used to form the ester is ethyl butanoate AND waterFirst part of the molecule is the carboxylic acid group and the second comes from the alchohol, These two bond to form an este...
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Answered by Eva S. • Chemistry tutor
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Explain why the second ionisation energy of Magnesium is lower than the second ionisation energy of Sodium.

For the 2nd IE of Na an electron is being removed from the 2p subshell.For the 2nd IE of Mg an electron is being removed from the 3s subshell.It requires more energy to remove an electron from a lower energy...
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Answered by NATHAN R. • Chemistry tutor
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If 350g of NaCl is dissolved in water to a final volume of 3dm . Calculate the concentration of the solution.

first, write down the mass, Mr and calculate the moles of NaCl.mass = 350gMr = 24.0 + 35.5 = 58.5mol = mass/Mr = 350/58.5 = 5.98 (3s.f)now calculate the concentration in 3dm3 of watervol = 3mol = 5.98conc = ...
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Answered by Adam D. • Chemistry tutor
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CH3OH + 1.5O2 -> CO2 + 2H2O. Using the information from Table 10 of the Data Booklet, determine the theoretical enthalpy of combustion of methanol.

By definition, ΔH° rxn = Σ ΔH° f (products) − Σ ΔH° f (reactants).The enthalpy of combustion is the same as the enthalpy of reaction in this case. From Table 10, we can get the standard enthalpy of formation...
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Answered by Mark C. • Chemistry tutor
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Why is chlorine more reactive than iodine?

Chlorine's outer electrons are closer to the nucleus than iodine, so greater attraction from the positive nucleus making it easier to gain an electron.
HK
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