Investigating the rate of diffusion of ammonia
Investigating the rate of diffusion of hydrochloric acid in agar
Planning
You can change different things you do to an experiment like the
amount of acid, temperature, size of the agar or concentration of the
acid.
We can measure/observe on how long it takes to diffuse or the amount
diffused each minute.
My partner and I are going to predict and measure the rough time it
will take to diffuse at different temperatures.
The factors that may affect the readings of our results are if the
temperature of the room may reduce the temperature of our water baths
or if the windows open.
There may be a human error were the person which is timing may not
get it exactly correct or you may not be able to measure the amount of
acid correctly.
We are going to do the experiment three times and work out the mean
time by adding the times together then dividing by however many
readings you’ve added. You have to do them three times just in case
the temperature varied. But you should get them roughly around a time.
To make it a fair test you must only change one factor. The factors
that we are keeping the same are the amount of acid you test it in,
the size of the agar cube and the container you do the experiment in.
You have to keep the container the same because with a wider container
will make it seem like there is only a small amount of acid were as a
boiling tube would make it seem like there is quite a lot. The factor
that we are changing is the temperature of the water bath, which we
will keep it in for however long it takes to diffuse.
I predict that the higher the temperature of Hydrochloric acid , the
faster it will diffuse.
Found my information at www.britannica.com
What are the factors that affect chemical reaction rate?
Answer: foundation energy, temperature, method, concentrations,
particle size, and surface area
Reactive impact: Chemical reaction takes place only when two reactants
collide under the right conditions. The higher the temperature the
more reactants with kinetic energy above the activation energy
Effect of temperature—increasing temperature to overcome the
activation energy barrier and to increase entropy (a measure of the
confusion of the molecules in a substance)
Effect of concentration—increasing colliding frequency
When you heat a solution up the partials speed up and in this case
move the partials in the agar so much it forms a chemical reaction.
The apparatuses we are going to use are: 1 cm² agar, boiling tubes,
water baths at different temperatures, ice, boiling tube rack,
Thus born The Woman Warrior, a chronicle of a Chinese American woman's personal sufferings and triumphs, of duplicities and truths, and of struggles and breakaways; a requiem for all the victims of the old culture whose soundless cries have not been heard and who died without a name, engulfed by the darkness and the silence. In her world then, at least, the failed heroine Fa Mu Lan is redeemed.
Investigating the Effect of Concentration on the Rate of Diffusion Aim: To find out if concentration affects the rate of diffusion. Prediction: I predict that the higher the concentration of acid the faster the reaction will be. Hypothesis: Diffusion is the spreading out of a gas or liquid from an area of low concentration to another area where it has a lower concentration until the overall concentrations are balanced. The Hydrochloric acid (HCl) diffuses into the gelatine cube of which contains Sodium Hydroxide (NaOH), which is an alkali. When the Hydrochloric acid combines with the Sodium Hydroxide they form salt and water, which is neutral therefore turning the pink cube to clear.
The hunger for power lies within every one of us, yet most can have the strength to resist it. However, occasionally the temptation is so strong that it corrupts the brain. All the person can think about is achieving that power, no matter the cost. Ji-Li Jiang’s memoir, Red Scarf Girl, tells the personal narrative of a young girl growing up during the Cultural Revolution in China. Despite being a black whelp, the child of a family belonging to any of the “Five Black Categories”, Ji-Li Jiang is able to overcome the countless tribulations brought upon her and her family. Although Ji-Li’s naivety enhances her involvement in the Cultural Revolution, her constant loyalty towards her family perseveres; nevertheless, without her earlier devotion
Growing up in the People’s Republic is a detailed account of two individual women’s generational struggle during the controversial periods of The Great Leap Forward, the Cultural Revolution and the Cultural Fever of the 1980’s. Their case study tries to define their individual identity growing up in a Communist China. Ma Xiadong and Ye Weili’s life allow the reader to understand the struggle that ensued for the individual at a time of change that was the Cultural Revolution.
Maxine, being of the first generation of her family to be born in America, only knows about China from what she hears in her mother’s “talk-stories.” These stories are told to act as lessons on how the Chinese people were and should be, and are often vary critical. In “No Name Woman,” the tale of Maxine’s aunt who was shunned from her family for having an affair shows how careful young women must be when growing up in Chinese culture. “My aunt haunts me—her ghost drawn to me because now, after fifty years of neglect, I alone devoted pages to her…” (17). Maxine feels remorse and can relate to her aunt because she too feels a sense of alienation from her traditional Chinese and seemingly narrow-minded heritage.
According to Jin Feng’s book entitled New Woman in Early Twentieth-Century Chinese Fiction, Ling’s works can be divided into three sections throughout her career. While all of her stories focus around the struggles of women during the modernization of China, Ling used different methods to address their reality. The first method portrayed the social lives of women without giving a direct method of addressing the difficulties that they faced. The second involves women who renounce their current life to pursue Marxism and the revolution. The third romanticizes the lives of women after joining the revolution.
This paper will address some of the issues surrounding hate speech and its regulation. I will explain both Andrew Altman and Jonathan Rauch’s positions in the first two sections. The third section will be on what Altman might say to Rauch’s opposite views. I will then discuss my view that hate speech should never be regulated under any circumstance especially in the name of protecting someone’s psychology, feelings, or insecurities like Altman prescribes. In the end, I will conclude that we should not agree with Altman despite his well intentioned moral convictions to push for hate speech regulation. Although hate speech is a horrible act, people must learn to overcome and persevere through difficult situations and not leave it to the law to protect their feelings and insecurities.
Detection of ammonia can be done using gas sensors. Examples of different application areas of ammonia gas sensing are; environmental monitoring, medical diagnostics, chemical laboratories and detection of ammonia in portable water and wastewater (Timmer et al., 2005). High concentrations of ammonia are easy to detect while for very low concentrations we require different gas sensors operating at different sensing principles. Ammonia gas sensors operate at different temperatures each having a specific detection limit range and response time to measure the ppm and sub-ppm concentrations rapidly. Commercial ammonia sensors make use of different techniques for ammonia detection and can be classified as metal oxide sensors, conducting polymer detectors, catalytic ammonia sensors and optical sensors. The ammonia gas sensors should be considered on basis of cost, maintenance, installation and most importantly specific sensors for the suitable application.
Zhong, Xueping, Zheng Wang, and Bai Di. Some of Us: Chinese Women Growing up in the Mao Era. New Brunswick, NJ: Rutgers University Press, 2001.
The early part of the novel shows women’s place in Chinese culture. Women had no say or position in society. They were viewed as objects, and were used as concubines and treated with disparagement in society. The status of women’s social rank in the 20th century in China is a definite positive change. As the development of Communism continued, women were allowed to be involved in not only protests, but attended universities and more opportunities outside “house” work. Communism established gender equality and legimated free marriage, instead of concunbinage. Mao’s slogan, “Women hold half of the sky”, became extremely popular. Women did almost any job a man performed. Women were victims by being compared to objects and treated as sex slaves. This was compared to the human acts right, because it was an issue of inhumane treatment.
I am going to use a range of concentrations to enable me to get a good
In a 100ml beaker 30mls of water was placed the temperature of the water was recorded. 1 teaspoon of Ammonium Nitrate was added to the water and stirred until dissolved. The temperature was then recorded again. This was to see the difference between the initial temperature and the final temperature.
Outsourcing is a technique for companies to reassign specific responsibilities to external entities. There are several motivations for outsourcing including organizational, improvement, cost, and revenue advantages (Ghodeswar & Vaidyanathan, 2008).
Weigh accurately about 0.3 g and dissolve in 40 ml of me-thanol. Titrate with 0.1 M so-dium hydroxide.
Before conducting my experiment I will research into, amongst other things, the factors that affect the rate of a reaction. This is so that I may enough information to understand the effect of temperature on the rate of a reaction and also gain appropriate understanding to make a suitable prediction as to what the outcome of my experiment will be.