physical chemistry experiment analysis.

Need an research paper on physical chemistry experiment analysis. Needs to be 5 pages. Please no plagiarism. Accuracy refers to the degree of technical intimacy between actual measurement and a known standard measurement. On the other hand, precision is concerned with the degree of reproducibility in measurements. Admittedly, both accuracy and precision are key determinants of reliability. In the presence of errors like the inaccurate molarity of NaOH, measurements in subsequent procedures are usually compromised.

This lab report covers the determination of KHP in an unknown through standardization of sodium hydroxide solution using potassium hydrogen phthalate, commonly abbreviated as KHP. NaOH is not only highly hygroscopic but also absorbs carbon dioxide from the air. These properties of NaOH yield substantial errors in the compound’s mass measurements. In practice, the actual concentration of NaOH is determined using KHP as an acidic primary standard (Stanton, 32). The equation for the reaction is KHC8H4O4 + NaOH → NaKC8H4O4 + H2O. KHP has one H+ whereas NaOH has a single OH-. On an ionic basis, H+ in KHP reacts with the OH- in NaOH to form H2O in the ratio 1:1. By titrating a weighted amount of KHP against NaOH, the actual molarity of NaOH can be derived from the resultant titration data. Once the molarity of NaOH has been determined, the percentage, purity of an impure primary standard can be deduced. A suitable indicator, which in this case is phenolphthalein, was used to indicate the titration’s end-point.

Theoretically, standardization of NaOH and determination of a primary standard’s purity are quantitative methods. Therefore, the accuracy of instrument readings is paramount in ensuring the success of volumetric analysis. In this case, the experiment began with the cleaning and calibration of instruments, primarily the burette, mass scales, and Erlenmeyer flasks. Once the instruments were ready, a solution of NaOH was prepared. Procedurally, preparing the solution of NaOH is the first step in determining the actual molarity of NaOH, which will be used in determining the percentage purity of KHP. Slightly concentrated NaOH reacts actively with CO2 to form carbonate ions, a weak base which compromises subsequent steps of a titration experiment (Stanton, 32).

Discuss analysis and design of concrete pavements.

Write 51 pages thesis on the topic analysis and design of concrete pavements. Based on a comprehensive analysis of various design methods and standards as well as a number of experimental tests, this project offers a basis for a new design method that can effectively be implemented to solve the current limitations of Austroads pavement designs. The new design for concrete pavements particularly utilizes Westergaard’s solutions for the calculation of stresses in various locations of the concrete pavement slab. The implementation of the new concrete pavement design method consists of gathering a number of pavement design parameters such as traffic and temperature loadings that are unique to Australia. Finally, with simplicity being a key factor, the proposed method provides a solution to some of the limitations of the current Austroads design approach.

Concrete pavement design has over the past few decades become a critical part of promoting concrete roads. Many of today’s design technologies have to take into account various environmental conditions as well as numerous design considerations such as estimations of future traffic growth or environmental changes (Fwa, 2006). The optimization of the materials in the concrete pavement system particularly demands a longer-term fatigue resistance, environmental sustainability, and lower economic costs.&nbsp.As a result, the design of concrete pavements often involves the determination of slab thickness, load transfer requirements, joint dimensions, reinforcement, and other concrete pavement features.

According to Lilley (2001), the contemporary design of concrete pavements is primarily based on Westergaard’s theory and analysis, where the modulus of sub-grade reaction, the radius of wheel load reaction, and radius of relative stiffness is employed. A critical design normally requires a combination of load stress, friction stress, and warping stress. In addition, various types of joints such as expansion and contraction joints may also be critically important during the design process (Austroads, 2012). The modulus of sub-grade reaction is one of the main parameters of Westergaard’s theory of rigid concrete pavement design.&nbsp.

cross-cultural communication at walmart.

Compose a 1250 words assignment on cross-cultural communication at walmart. Needs to be plagiarism free! When individuals are faced with the prospect of communicating with other people who have originated from a different cultural context, there may be a challenge to their “delusion that all communication patterns are basically the same and that differences do not matter.” (Hall, 1989:63). As a result, miscommunication occurs because of the differences in rules that govern individual cultures. In order to overcome such barriers in communication, lectures about cultural differences may accomplish little by way of really promoting understanding among cultures, rather individuals are likely to derive the maximum benefits from interacting with people of other cultures on a daily basis. (Hall, 1989).

Effective communication can occur only when individuals are able to learn the rules of another culture, which takes a great deal of time to successfully master. Cultural patterns are embedded in behavior and this also creates subtle social behavioral expectations from others which are difficult for a person of one culture to successfully articulate to another. Inherent cultural elements of deep-seated biases, as well as built-in blinders, get in the way of effective communication among people of different cultures. (Hall, 1989).

In today’s rapidly globalizing environment, where firms need to tap into foreign markets, they generally utilize multicultural teams, consisting of people from different national cultures. Such teams promise flexibility, responsiveness, and improved resource utilization to meets the challenges of a complex global environment (Snow et al, 1996). However, such teams are also faced with the challenges of effective cross-cultural communication to achieve organizational goals.

According to Hofstede, who explains that a systems approach needs to be utilized in the case of cross-cultural studies, national culture may include all relevant elements such as “individuals, groups, organizations, or society as a whole” all of which may be relevant in examining the concept of what constitutes national culture. (Hofstede, 1980:32).

How do you see the local and the global connected in your community? In health c

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