Online Shopping free essay sample

With increased use of the internet, more and more people drawn towards online shopping. Online shopping is one of the greatest aspects of the internet today. By choosing to shop online you will be able to enjoy many benefits, some of which are self-explanatory, others that are not so apparent. Online shopping is a multi-billion business and is constantly growing. Many individuals favor this kind of shopping because of ease. For shoppers who work for lengthy hours, it would be hard to visit a store during standards trade hours. Online retails allow orders twenty fours a day and shoppers can easily shop from their place of convenience and whenever they have free moment available. As well, online shopping gives the shopper the facility to compare the products with easiness. This prevents the bother of visiting different conventional stores and finding difficult to remember details like cost and features. Online shopping is predominantly useful for those with limited mobility as they can shop without any difficulty. We will write a custom essay sample on Online Shopping or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page The most reason that online shopping have a good benefits are to help buyer search the exactly what they looking for quickly. Besides the other is save time, energy, money and gas for spent to reach to the store by look the desired product Firstly, buyer can search for exactly what you’re looking for quicker. There are many online stores who specialize in a certain type of sofa or style that you may be looking for and a quick Google search will bring you to that site. If you love knowing the newest styles, or having unique pieces then online shopping makes it easier to do so. Shopping online gives you the privilege to shop whenever you want. The stores are never closed and you can do your shopping 247. It also provides variety to the buyer. You don’t need to jump from shop to shop to look for varieties of a product available in the market. The options available online are many and this is one of the best features of online shopping. Shopping from malls and stores makes it difficult to compare between features and prices of products. Shopping through websites provides simplified comparison of products and helps in deciding which one should be purchased. Secondly, save time, energy, money and gas for spent to reach to the store by look the desired product. Instead of driving around wasting gas or pending hours on the bus in travel time you can visit all the stores that you’re interested in at once. This eliminates time going from store to store to see what is available and at what price. It is convenient and easy! You do not need any degree to learn online shopping. All you have got to do is, visit the websites, search for your product and buy it. Your product is just a click away!. In addition, many websites device special discount schemes from time to time to attract customers. You can always buy products under such schemes and save a lot of money Other benefits that only online shopping can offer you include the ability to avoid the holiday rush, the waiting in line, the weather elements, traffic, and having to carry all of the shopping bags around. Sounds relaxing do it not? It should, often times shopping within a mall or department store can become such a hassle that it is not as fun as it once was. Online shopping makes it fun again, depending on what you are looking for you have many options in your selection For my conclusion, I think online shopping is great. I’ve recently caught the online shopping bug and do most my shopping online. As a student, I dont always have time to go do the store. I love the convenience of being able to shop at 2 in the morning and the ease of comparison shopping and knowing that I’m getting the best prices. Buying dress online is also great for that exact reason, multiple dress and accessories stores at the click of a button. However, I think getting the feel for your dress is very important. At Modern Sensibility which always encourage everyone to come to the store and to see the quality of dress to see if they like them or not. Many people are pickier than others and seeing the dress online may seem like a good idea to them at first, but then they receive it and it’s a big disaster. However, my only advice is be safe, be smart and make sure you’re buying from a reputable website. Do your research just like you would any other store. In conclusion, online shopping has the potential to make life so convenient for you. With the increasing cost of fuel, it becomes even more attractive to skip the mall and retail stores unless there’s a special huge sale.

Primary Standards in Chemistry

Primary Standards in Chemistry In chemistry, a primary standard is a reagent which is very pure, representative of the number of moles the substance contains and easily weighed. A reagent is a chemical that is used to cause a chemical reaction with another substance. Often, reagents are used to test for the presence or quantity of specific chemicals in a solution. Properties of Primary Standards Primary standards are typically used in titration to determine an unknown concentration and in other analytical chemistry  techniques. Titration is a process in which small amounts of a reagent are added to a solution until a chemical reaction occurs. The reaction provides confirmation that the solution is at a specific concentration. Primary standards are often used to make standard solutions (a solution with a precisely known concentration). A good primary standard meets the following criteria: high level of puritylow reactivity (high stability)high equivalent weight (to reduce error from mass measurements)not likely to absorb moisture from the air (hygroscopic) to reduce changes in mass in humid versus dry environmentsnon-toxicinexpensive and readily available In practice, few chemicals used as primary standards meet all of these criteria, although its critical that  a standard is of high purity. Also, a compound which may be a good primary standard for one purpose may not be the best choice for another analysis. Examples of Primary Standards and Their Uses It may seem odd that a reagent is needed to establish the concentration of a chemical in solution. In theory, it should be possible to simply divide the mass of the chemical by the volume of the solution. But in practice, this isnt always possible. For example, sodium hydroxide (NaOH) tends to absorb moisture and carbon dioxide from the atmosphere, thus changing its concentration. A 1-gram sample of NaOH may not actually contain 1 gram of NaOH because additional water and carbon dioxide may have diluted the solution. To check the concentration of NaOH, a chemist must titrate a primary standard (in this case a solution of potassium hydrogen phthalate (KHP). KHP does not absorb water or carbon dioxide, and it can provide visual confirmation that a 1 gram solution of NaOH really contains 1 gram. There are many examples of primary standards; a few of the most common include: Sodium chloride (NaCl) is used as a primary standard for silver nitrate (AgNO3) reactions.Zinc powder may be used to standardize EDTA solutions after it has been dissolved in hydrochloric acid or sulfuric acid.Potassium hydrogen phthalate or KHP may be used to standardize perchloric acid and an aqueous base in an acetic acid solution. Secondary Standard Definition A related term is secondary standard. A secondary standard is a chemical that has been standardized against a primary standard for use in a specific analysis. Secondary standards are commonly used to calibrate analytical methods. NaOH, once its concentration has been validated through the use of a primary standard, is often used as a secondary standard.