The Standard Enthalpies of Formation for Several Substances Are Given

question 23

Multiple Choice

The standard enthalpies of formation for several substances are given below: Calculate the DH° for the reaction below.

• A) -881.4 kJ
• B) -811.8 kJ
• C) -149.6 kJ
• D) +149.6 kJ
• E) +213.4 kJ

---

Definitions:

Variability

Variability is a statistical concept that describes the extent to which data points in a data set differ from each other and from the average or mean value of the set.

Measure

A tool or instrument used to quantitatively assess or determine the extent, dimensions, quantity, or capacity of something.

Manipulation

The act of controlling or influencing a person, situation, or system often in a skillful manner.

Bar Graph

A visual presentation that uses bars to depict frequencies of responses, percentages, or means in two or more groups.