Use the Bond Enthalpy Data Given to Estimate the Heat $\equiv$

question 84

Multiple Choice

Use the bond enthalpy data given to estimate the heat released when 6.50 g of nitrogen gas reacts with excess hydrogen gas to form ammonia at 25°C. BE(N $\equiv$ N) = 941.4 kJ/mol
BE(H-H) = 436.4 kJ/mol
BE(N-H) = 393 kJ/mol

• A)228 kJ
• B)340 kJ
• C)107 kJ
• D)46.1 kJ
• E)24.9 kJ

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Definitions:

Very Strong Association

A term used in statistics to describe a relationship between two variables that shows a high level of correlation or dependency.

Linear Association

A relationship between two variables that can be graphically represented with a straight line, indicating that changes in one variable correlate to changes in the other.

Negative Association

A connection between two variables where as one variable rises, the other falls.

Moderately Strong Association

A term in statistics indicating a fairly significant relationship between two variables, though not perfectly predictive.