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17 Nov 2019
in both volume and temperature, as shown in the 1. Imagine a reaction that results in a change diagram below. What is the sign of the work being done, and what is the sign of the enthalpy change involved in this reaction? EXPLAIN!!! 1 atm Reaction, 2. How much heat is released or absorbed (specify which!!!) if 233.0 g calcium oxide reacts with 200.0 g carbon according to the following reaction? cao (s) + 3C (s)â CaC2 (s) + CO (g) ì¨rnn_ 464.4 kJ/mol 3, Determine the ÎHnn for the below reaction (see tables in your book): CH4(g) +O2(g) CO2(g) H2O(g) â + o Eplgl wy evues a) Using Standard Enthalpy of formation (AH') b) Using Bond Dissociation Energies (D). c) Explain why the values should be the same for both of these calculations. be t same for both of these calculations 4. Stearic acid, C18H3602, is a fatty acid found in foods like meat and candy bars. If the ì¨t for stearic acid -948 kJ/mol, and a candy bar contains 11.0 g stearic acid, how many Nutritional calories (Cal) are coming from the fat in the candy bar? Use the enthalpy of formation table in your book as needed (Table 6.5). 02(g) COag) H2O(g) â + 5.One of the components of polluted air that causes photochemical smog is NO (nitrogen monoxide). It is formed in the high-temperature environment of internal combustion engines in the reaction below. Why are high temperatures needed to convert N2 and O2 to NO? Discuss in relation to bonds. 6.Explain why ionization energy decreases as you move down the noble gases from Helium to argon. Sodium atoms are much larger than chlorine atoms, but sodium ions are much smaller than chloride ions. Why? 7.
in both volume and temperature, as shown in the 1. Imagine a reaction that results in a change diagram below. What is the sign of the work being done, and what is the sign of the enthalpy change involved in this reaction? EXPLAIN!!! 1 atm Reaction, 2. How much heat is released or absorbed (specify which!!!) if 233.0 g calcium oxide reacts with 200.0 g carbon according to the following reaction? cao (s) + 3C (s)â CaC2 (s) + CO (g) ì¨rnn_ 464.4 kJ/mol 3, Determine the ÎHnn for the below reaction (see tables in your book): CH4(g) +O2(g) CO2(g) H2O(g) â + o Eplgl wy evues a) Using Standard Enthalpy of formation (AH') b) Using Bond Dissociation Energies (D). c) Explain why the values should be the same for both of these calculations. be t same for both of these calculations 4. Stearic acid, C18H3602, is a fatty acid found in foods like meat and candy bars. If the ì¨t for stearic acid -948 kJ/mol, and a candy bar contains 11.0 g stearic acid, how many Nutritional calories (Cal) are coming from the fat in the candy bar? Use the enthalpy of formation table in your book as needed (Table 6.5). 02(g) COag) H2O(g) â + 5.One of the components of polluted air that causes photochemical smog is NO (nitrogen monoxide). It is formed in the high-temperature environment of internal combustion engines in the reaction below. Why are high temperatures needed to convert N2 and O2 to NO? Discuss in relation to bonds. 6.Explain why ionization energy decreases as you move down the noble gases from Helium to argon. Sodium atoms are much larger than chlorine atoms, but sodium ions are much smaller than chloride ions. Why? 7.
Nelly StrackeLv2
23 Apr 2019