Electrochemical cell lab Aim Essay Example for Free

Electrochemical cell lab Aim Essay Aim :- To find out the feasibility of a redox reaction by looking at the cell potential of the reaction . Quantitative observation The table below shows the values of cell potential that were recorded when the experiment was performed Reaction Cell potential (ÂÂ ±0.01V) CuSO4 and ZnSO4 0.99V CuSO4 and AgNO3 0.64V Ag 1.39V Qualitative Observation Reaction Obsevrations CuSO4 and ZnSO4 Copper sulphate turns from clear to blue , whereas zinc sulphate remains colorless CuSO4 and AgNO3 Copper sulphate is blue in color , silver nitrate is colorless Ag Data processing Experiment 1 Zn(s) - Zn2+ (aq) + 2e- (aq) Cu2+ (aq) + 2e- (aq) - Cu (s) Cu2+ (aq) + Zn(s) - Cu(s) + Zn2+ (aq) Experiment 2 Cu(s) - Cu2+ (aq)+ 2e- (aq) Ag+(aq) + e- (aq) - Ag(s) Cu(s) + 2Ag+ (aq) - Cu2+ (Aq) + 2Ag (s) Experiment 3 Zn(s) - Zn2+ (aq) + 2e- (aq) Ag+ (aq) + e- (aq)- Ag(s) Zn(s) + 2Ag+ (aq) - Zn2+ (aq) + 2Ag (s) The table below shows the literature values for the respective cell potential Reaction Cell potential (ÂÂ ±0.01V) CuSO4 and ZnSO4 0.34V CuSO4 and AgNO3 0.46 V. Ag 1.10 V Error percentage = (|difference between the literature and experimental value|)/(the literature value )x100 = (|0.34V 0.99V|)/(0.34V) x100 = 191.17% We can similarly find the error percentages for other cell potentials also The table below shows the respective error percentages of each of the cell potential Reaction Error percentage CuSO4 and ZnSO4 191.17% CuSO4 and AgNO3 39.13% Ag 16.36% Theory Electrochemical cells In an electrochemical cell, electricity is produced through chemical reactions. There consist two electrodes: the negative electrode and the positive electrode. At the negative electrode

Being Popular Essay -- Drinking Drugs Peer Pressure Essays

Being Popular Drug and alcohol abuse is a serious problem among many young people. Most drug and alcohol abuse happens on the weekend at a party or at a friend’s house. Young people want to be popular and fit in, and if fitting in means drinking or using drugs, they are going to do it. After a few parties, and a few nights out at a friend’s house,young people start to get addicted to drugs and alcohol and their life begins to fall apart.   Ã‚  Ã‚  Ã‚  Ã‚  Being popular is a goal that all teenagers want to achieve. There’s nothing like sitting at the popular lunch table or knowing all of the football and basketball players. Being popular also means that you have to do all of the things that the popular kids do, like drinking or smoking cigarettes once in a while. Smoking cigarettes and drinking just a little leads to worse things like drinking more, and trying drugs.   Ã‚  Ã‚  Ã‚  Ã‚  The parties that last a whole weekend, because their parents are out of town, are where most of the drinking and drug abuse is going on. Getting drugs and alcohol is very easy. The young people get someone older to buy the alcohol for them, and anyone can find someone to sell them drugs. After going to a party every weekend, they become used to the alcohol and drugs and begin to drink and do more drugs. Then they become addicted.   Ã‚  Ã‚  Ã‚  Ã‚  Once they’re addicted, their life begins to fall apart. School grades drop, they are not studying at night any more, they don’t pay attention in class, and they don’t do the ...

Mang Inasal

Pre-Mang Inasal At age 10, Sia already helps out in the family business, stacking merchandise, taking inventories or manning the counter after school. It was with the family business that Sia developed the sixth sense for business. By age 20, he was already running multiple businesses which include a photo developing store (Injap Color Express), a 58-room three star hotel (Four Season Hotel), and a laundry shop (Mister Labada). Founding of Mang Inasal The start When a 250-meter slot in Robinson’s mall in Iloilo, was presented to Sia, he immediately reserved it despite not knowing what to put up yet.With P2. 4 million of borrowed money, Sia decided on inasal as the most viable dish after analyzing the different culinary specialty of the 16 regions. It was a unique entry to the saturated chicken business. Hence, in December 12, 2003, he opened the first store of Mang Inasal. Sia positioned Mang Inasal as an alternative quick service restaurant that serves charcoal-grilled chicke n, wrapped its rice in banana leaf and uses bamboo sticks for its skewers. He also offered unlimited rice, becoming the first quick-service restaurant to do so.At the beginning, Sia had to work long hours and helped in the cleaning of the store. After which, he would prepare and marinate the chicken for the next day. Sia also had no system for running the operation and no commissary to supply the raw materials. Not long, Sia’s Mang Inasal became a critical success in Visayas. Within a year, Sia opened another branch in Roxas City. In the second year of operations, he opened six more and in the third year, another 20. Success and expansion Sia had a lot of franchise inquiries but he held off until 2005.He joined the Philippine Franchise Association. Not long after, he brought the Mang Inasal to [[Luzon]. He also developed several monitoring procedures to safeguard quality and cleanliness. He also established a research and development team for product development. He also impl emented advanced online supply ordering system for his branches. To date, there are 306 branches nationwide. Aside from Mang Inasal, Sia also revived the Deco in 2007 after he partnered with the owner’s children.Deco is considered the original batchoy, started by a young butcher name Deco Guillergan Sr. in 1938. Acquisition of Jollibee Sia had plans of going public in 2010 but in October, publicly-listed company Jollibee Food Corporation announced it has acquired 70% of Mang Inasal Philippines, Inc. for P3 billion. Of which, Jollibee paid P200 million to the parent firm Injap Investments, Inc. , which still held the remaining 30%. In December, Jollibee paid the 90% balance while the remaining 10% will be paid over three years.Mang Inasal’s total branch of 303 will contribute 5% to Jollibee’s worldwide system sales, five percent to its revenue and seven percent to its operating income. Sia and Ferdinand Sia will sit as part of the Board of Directors of Jollibee. Awards Sia was the Small Business Entrepreneur winner handed out by Ernst and Young in 2010. He also received the Urban Leadership Award from the Canadian Urban Institute because of his outstanding contributions to the enhancement of the public realm and the quality of life in the Metro Iloilo-Guimaras area.

Anti Poverty Programs Are We Helping The Poor - 1313 Words

â€Å"Anti-poverty programs: Are we helping the poor?† David Vang Qin Fan Econ 40 9 December, 2014 Throughout history, poverty has always been one of the biggest issues in the United States with the major impacts that it has brought into the economy and standard way of living. Although poverty may be overshadowed by such recent event such as the raise in minimum wages in California, it is still something that society should still be concern about because it can only get worse from here by the way it is progressing in the economy if actions are not being met. Furthermore, currently major factors of poverty are portrayed as the anti-poverty programs that are governmentally funded such as welfare, a program that aid families who†¦show more content†¦Through the article, Mazie (2013) emphasized that when it comes to welfare in America, taxes are some of biggest concern because many of the people who receives these funds from the government’s taxes misuse these programs while hard labor workers have to struggle with low paychecks after tax deductions (Mazie, 2013). This is in fact true because with the more demand for anti-poverty programs due to the increase in poverty, taxes will gradually increase in order to make amends for the losses. With these increases in tax, it will only lead to problem such as higher unemployment rates because many businesses will have to lay off workers in order to make up for the losses in their goods and supplies. In a way these changes lead to great affects on the labor market and demand for labor and workers. Furthermore, Mazie highlighted the fact that he believes that objective of these programs should be towards getting people off their feet or out of poverty and have them strive towards success rather than living off the benefits (Mazie, 2013). Supporting Mazie’s argument, in the article, â€Å"Government’s war on poverty reduction†, from the 2013 studies of the Cato Institute, Michael Tanner, a senior fellow of Cato Institute, and Charles (2013), a research associate of