Heat of Vaporization Example Problem

Heat of vaporization is the amount of heat energy required to change the state of a substance from a  liquid into  a vapor or gas. It is also known as enthalpy of vaporization, with units typically given in joules (J) or calories (cal). Heat of Vaporization Problem This sample problem demonstrates how to calculate the amount of energy required to turn a sample of water into steam: What is the heat in joules required to convert 25 grams of water into steam? What is the heat in calories?What you know: Heat of vaporization of water 2257 J/g 540 cal/g Note:  You wont be expected to know enthalpy or heat values; they will be given in a problem or can be looked up in a table. How to Solve You can solve this problem  using either joules or calories for heat. Part I: Use the formula  q m ·ÃŽâ€Hv in which q heat energy, m mass, and ΔHv heat of vaporization.q (25 g)x(2257 J/g)q 56425 JPart II: q m ·ÃŽâ€Hfq (25 g)x(540 cal/g)q 13500 cal Answer The amount of heat required to change 25 grams of water into steam is 56425 joules or 13500 calories. A related example illustrates how to calculate the energy when water changes from solid ice into steam.

Bill of Attainder Definition

A bill of attainder – sometimes called an act or writ of attainder or an ex-post facto law – is an act of a government’s legislature that declares a person or group of persons guilty of a crime and prescribing their punishment without the benefit of a trial or judicial hearing. The practical effect of a bill of attainder is to deny accused person’s civil rights and liberties. Article I, Section 9, paragraph 3, of the U.S. Constitution prohibits the enactment of bills of attainder, stating, â€Å"No Bill of Attainder or ex-post facto Law will be passed.† Key Takeaways: Bills of Attainder Bills of attainder, or ex-post-facto laws, are acts of Congress that declare a person or persons guilty of a crime without a trial or judicial hearing.As a part of English Common Law, monarchs often used bills of attainder to deny a person’s right to own property, the right to a title of nobility, or even right to life.Arbitrary British enforcement of bills of attainder on American colonists was a motivation for the Declaration of Independence and the American Revolution.As direct denials of civil rights and liberties, bills of attainder are prohibited by Article I, Section 9 of the U.S. Constitution.The individual U.S. states are similarly prohibited from passing bills of attainder on their citizens by Article I, Section 10 of the U.S. Constitution.   Origin of Bills of Attainder Bills of attainder were originally part of English Common Law and were typically used by the monarchy to deny a person’s right to own property, the right to a title of nobility, or even right to life. Records from the English Parliament show that on January 29, 1542, Henry VIII secured bills of attainder that resulted in the executions of a number people holding titles of nobility. While the English Common Law right of habeas corpus guaranteed fair trials by a jury, a bill of attainder completely bypassed the judicial procedure. Despite their obviously unfair nature, bills of attainder were not banned throughout the United Kingdom until 1870. US Constitutional Ban of Bills of Attainder As a feature of English law at the time, bills of attainder were often enforced against residents of the thirteen American colonies. Indeed, outrage over the enforcement of bills attainder in the colonies was one of the motivations for the Declaration of Independence and the American Revolution. The dissatisfaction of Americans with British attainder laws resulted in their being prohibited in the U.S. Constitution ratified in 1789. As James Madison wrote on January 25, 1788, in the Federalist Papers Number 44, â€Å"Bills of attainder, ex-post facto laws, and laws impairing the obligations of contracts, are contrary to the first principles of the social compact, and to every principle of sound legislation. ... The sober people of America are weary of the fluctuating policy which has directed the public councils. They have seen with regret and indignation that sudden changes and legislative interferences, in cases affecting personal rights, become jobs in the hands of enterprising and influential speculators, and snares to the more-industrious and less-informed part of the community.† The Constitution’s ban of the use of bills of attainder by the federal government contained in Article I, Section 9 was considered so important by the Founding Fathers, that a provision banning state law bills of attainder was included in the first clause of ​Article I, Section 10. The Constitution’s bans of bills of attainder at both the federal and state level serve two purposes: They enforce the fundamental doctrine of separation of powers by forbidding the legislative branch from performing functions constitutionally delegated to the judicial or executive branch.  They embody the protections of due process of law expressed in the Fifth, Sixth, and Eighth Amendments. Along with the U.S. Constitution, the constitutions of ever state expressly forbid bills of attainder. For example, Article I, Section 12 of the constitution of the State of Wisconsin reads, â€Å"No bill of attainder, ex-post facto law, nor any law impairing the obligation of contracts, shall ever be passed, and no conviction shall work corruption of blood or forfeiture of estate.† Sources and Further Reference Saunders, Thomas M. â€Å"Defining Bills of Attainder.† The Bill of Attainder Project. Lipson, Barry J. â€Å"Bill of Attainder: Trial by Legislature.† Federally Speaking (Number 36).

Calyx Corolla Case Analysis Free Essays

1. The strength of the Calyx Corolla formula is that they enhance the delivering speed so that customers get fresher flowers. Also, it lowers the cost of delivery from growers to C C, from wholesellers to retailers, and from retailers to customers. We will write a custom essay sample on Calyx Corolla Case Analysis or any similar topic only for you Order Now But there are also problems in the formula. For example, it is hard to control the quality of the products. C C has to monitor the growers and Fed, and spend extra money to maintain the high quality of the products. . Calyx Corolla has been successful because they make delivery more efficient, which is to deliver flowers directly from growers to customers so that the plants are fresher. Also, they accurately position themselves and send catalogues to people who are likely to buy flowers. It’s an efficient way to market without a large amount of cost. Third, they developed business partners to promote selling. 3. The large growers like Sunbay Company also distribute and sell flowers themselves. They also buy flowers from other growers. Thus it is hard to control the quality of the flowers they provide. The large growers like Sunbay Company are both partners and competitors because they also sell flowers to customers. 4. They are growing the business by launching an advertising campaign. They will advertise on television emphasizing the longevity and freshness of the lowers. They will insert mini-catalogs into newspaper supplements and magazines. 5. The company is customer-oriented. They directly link consumers with growers in order to reduce the time it took to deliver, thus ensure the freshness and longevity of the consumers. They will not let flowers frozen outside the door in the cold days if they fail to deliver it, because it this will not encourage consumers to buy flowers from them again. They send catalogs regularly and change their banquets seasonally to meet consumers’ needs. All they have done is to keep the â€Å"life-time† customers. They are not only selling flowers, they are selling good service as well. 6. It’s easy for customers to find what they want through the website, because the company has provided different ways of categorizing the bouquets. Customers can decide what kind of flowers they need according to different situations. It’s very customer-oriented. How to cite Calyx Corolla Case Analysis, Essay examples