Tuesday, March 17, 2020
constitutionalism essays
constitutionalism essays The seventeenth century, which witnessed the development of absolute monarchy, also saw the appearance of the constitutional state. While France solved the question of sovereignty with the absolutist state, England evolved toward the constitutional state. If we could assign a very simple definition of the term of the term constitutionalism, it would be the limitation of government by law. Constitutionalism implies a very delicate balance between the authority and power of government, on the one hand, and the rights and liberties of the subjects, on the other. In essence, the law is embodied by a set of precepts and principles a constitution. A nations constitution may be written or unwritten. It may be embodied in one basic document, occasionally revised by amendment or judicial decision, like the Constitution of the United States. It also may be partly written and partly unwritten and include parliamentary statutes, judicial decisions, and a body of traditional procedures and practices (like the English constitution). Regardless of whether it is written or unwritten, a constitution gets its binding force from the governments acknowledgment that it must respect that constitution that is, that the state must govern according to the laws. Likewise, in this state, the people look on the laws and the constitution as the protector of their rights, liberty, and property. Modern constitutional governments may take either a republican or a monarchical form. In a constitutional republic, the sovereign power resides in the electorate and is exercised by the electorates representatives. In a constitutional monarchy, a king or queen serves as the head of state and possesses some residual political authority, but again the ultimate, or sovereign, power rests in the electorate. The constitutional government at this time period has sometimes been perceived to be the same as the democratic form. However, su...
Sunday, March 1, 2020
Combined Gas Law Definition and Examples
Combined Gas Law Definition and Examples The combined gas law combines the three gas laws: Boyles Law, Charles Law, and Gay-Lussacs Law. It states that the ratio of the product of pressure and volume and the absolute temperature of a gas is equal to a constant. When Avogadros law is added to the combined gas law, the ideal gas law results. Unlike the named gas laws, the combined gas law doesnt have an official discoverer. It is simply a combination of the other gas laws that works when everything except temperature, pressure, and volume are held constant. There are a couple of common equations for writing the combined gas law. The classic law relates Boyles law and Charles law to state: PV/T k where P pressure,à V volume,à T absolute temperature (Kelvin), andà k constant. The constant k is a true constant if the number of moles of the gas doesnt change.à Otherwise, it varies. Another common formula for the combined gas law relates before and after conditions of a gas: P1V1 / T1 P2V2 / T2 Example Find the volume of a gas at STP when 2.00 liters is collected at 745.0 mm Hg and 25.0 degrees Celsius. To solve the problem, you first need to identify which formula to use. In this case, the question asks about conditions at STP, so you know youre dealing with a before and after problem. Next, you need to understandà STP. If you havent memorized this already (and you probably should, since it appears a lot), STP refers to standard temperature and pressure, which is 273 Kelvin and 760.0 mm Hg. Because the law works using absolute temperature, you need to convertà 25.0à degrees Celsius to the Kelvin scale. This gives you 298 Kelvin. At this point, you can plug the values into the formula and solve for the unknown. A common mistake some people make when theyre new to this kind of problem is confusing which numbers go together. Its good practice to identify the variables. In this problem they are: P1à 745.0 mm HgV1à 2.00 LT1à 298 KP2à 760.0 mm HgV2à x (the unknown youre solving for)T2à 273 K Next, take the formula and set it up to solve for the unknownà x, which in this problemà isà V2: P1V1à / T1à P2V2à / T2 Cross-multiply to clear the fractions: P1V1T2à P2V2T1 Divide to isolateà V2: V2à (P1V1T2) / (P2T1) Plug in the numbers and solve for V2: V2à à (745.0 mm Hg à · 2.00 L à · 273 K) / (760 mm Hg à · 298 K)V2 1.796 L Report the result using the correct number of significant figures: V2à 1.80 L Applications The combined gas law has practical applications when dealing with gases at ordinary temperatures and pressures. Like other gas laws based on ideal behavior, it becomes less accurate at high temperatures and pressures. The law is used in thermodynamics and fluid mechanics. For example, it can be used to calculate pressure, volume, or temperature for the gas in clouds to forecast weather.
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