Interpreting Data Equal amounts of iron, water, and sand, all at
the same initial temperature, were placed in an
oven and heated briefly. Use the data in Table 5-2 on
page 141 to match each final temperature with the
appropriate material: 31°C, 5°C, and 46°C. If you need
help, refer to Interpreting Data in the Skill Handbook.
144
Chapter 5 Energy

Read the sentences below in 1962, i tried to enroll as the first black student at the university of mississippi. the governor of mississippi blocked my entrance which best describes the verbs used in the sentences? o they are past tense verbs, which are often used in narrative essays o they are past tense verbs, which are not often used in narrative essays. o they are future tense verbs, which are often used in narrative essays o they are future tense verbs, which are not often used in narrative essays.

Answer : option c) heat is released during the process.explanation :

the enthalpy of formation of water is given as -285.8kj/mol, which states that the enthalpy of formation is negative.

negative enthalpy of formation indicates that the heat is released during the reaction process. the heat is released from reaction to the surroundings the enthalpy is expressed with a negative sign with the energy given out in the reaction process.

the formation of water takes place by giving out heat which is -285.8 kj/mol.

The answer is d.potassium

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