A Substance Has a Melting Point of 20°C and a Heat

question 63

Multiple Choice

A substance has a melting point of 20°C and a heat of fusion of 3.4 × $10^4$ J/kg.The boiling point is $150 ^ { \circ } \mathrm { C }$ and the heat of vaporization is $6.8 \times 10^4 \mathrm {~J} / \mathrm { kg }$ at a pressure of one atmosphere.The specific heats for the solid,liquid,and gaseous phases are 600 J/kg ∙ K (solid) ,1000 J/kg ∙ K (liquid) ,and 400 J/kg ∙ K (gaseous) .How much thermal energy is required to raise the temperature of $1.90 \mathrm {~kg}$ this substance from $- 4 ^ { \circ } \mathrm { C }$ to $106 ^ { \circ } \mathrm { C }$ at a pressure of one atmosphere?

• A)260 kJ
• B)190 kJ
• C)230 kJ
• D)92 kJ
• E)320 kJ

Understand the role and impact of legislation and policies on the United States' preparation for and participation in World War II.

Recognize the significance of key historical events and their dates during World War II.

Evaluate the effectiveness of the Allied conferences in shaping post-war geopolitics.

Assess the impact of World War II on American industry and economic practices.

---

Definitions:

Decedent's Estate

The legal term referring to the property, assets, and liabilities left behind by an individual after death.

Living Will

A legal document specifying a person's wishes regarding medical treatment in circumstances where they are no longer able to make decisions due to illness or incapacity.

Medical Intervention

A set of actions taken by health care professionals to improve, maintain, or assess the health status of a patient.

Holographic Will

A will written wholly in one’s own handwriting that generally requires no witnesses.