The rate of reaction is a measure of how fast something happens. We can find the rate of reaction by measuring the change that happens in a set period of time.
Introduction
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The rate of reaction is a measure of how fast something happens. We can find the rate of reaction by measuring the change that happens in a set period of time. Many factors can affect the rate of reaction; the concentration of the reactants is one of them. In the following experiments we will investigate how the concentration of the reactants affect the rate of reaction. To do this we will use the reaction between magnesium and hydrochloric acid.
GRAPH
I will measure the rate of reaction by timing how long the reaction takes. Aim- I am trying to find out how an increase/decrease in concentration of the acid affects the rate of reaction in magnesium strips.
Prediction:
I predict that as the concentration of hydrochloric acid increases the time taken for the magnesium to dissolve will decrease. I also think that when the concentration of the acid doubles the rate of reaction will also double.
Collision Theory:
The collision theory is how the rate of reaction increases when the concentration of hydrochloric acid increases.
In the reaction firstly all of the particles in the reacting substances must collide. They must collide with a certain amount of energy called activation energy, this must be reached for the reaction to take place. If the particles do not reach this required amount of energy there will not be any successful collisions and therefore the reaction will not take place. If the particles do reach the required amount of energy a reaction will rake place and as the number of collisions increase the reaction speeds up.
The more concentrated the reactants the larger the number of successful collisions between the particles. This explains why the largest rate of reaction is usually as soon as the reactants have been mixed together, this means they are both at their highest concentrations. High concentration Low concentration
(18cm³ HCL + 2cm³ H²O) (6cm³ HCL + 14cm³ H²O)
The temperature in this investigation will not affect the rate of reaction because throughout the investigation it will stay at room temperature. If the temperature was to change during the experiment it would effect the rate of reaction by speeding it up if the temperature increased because the particles move a lot faster and travel a larger
Charles Wilson Hackett, Revolt of the Pueblo Indians of New Mexico and Otermin’s Attempted Reconquest, 1680–1682 (Albuquerque: University of New Mexico, 1942), Volume 2: 245–49.
Andrew L. Knaut. “The Pueblo Revolt of 1680: Conquest and Resistance in Seventeenth-century New Mexico”. (1995). Pg. 240-248
Labor’s rights, this issue have been bothering many worker since the 19th century and can still be a problem today. As John L. Lewis has said in his speech “I repeat that labor seeks peace and guarantees its own loyalty, but the voice of labor, insistent upon its rights, should not be annoying to the ears of justice or offensive to the conscience of the American people” (John L. Lewis), which under his words meant that labor is something that can be done right and peacefully but it needs rules and benefits that come with those rules which labor asks for and when labor asks for those rules and benefits it shouldn’t be taken like some annoying kid’s demands but more as something that needs to be done and done with a right mind set. Labor today consists of a man or woman going to work, working their hours, and finally getting paid for those hours at the end of the week, at least a minimum of $7.50 an hour (United States Department of Labor), but before it wasn’t like that before many workers would get paid very poorly even thought they would work for a lot of hours and they wouldn’t get benefits from their work or safety when working such as in the mines like the mine workers, but one man stood up for them and his name was John L. Lewis (John Llewellyn Lewis, Encyclopedia).
Differences between cultures are not something new. Many of us can still see it in our daily lives. Four hundred years ago two very distinctly different cultures clashed in what we call the American Southwest. The Spanish presence brought new ideas, new culture, and new way of life to the new found Americas much to the demise of the already settled native tribes. Already having controlled much of Mexico and South America, problems were rising in the outskirts of New Spain. Secular and religious authorities were in conflict and the ever growing animosity of its aboriginal tribe made it difficult to maintain Spanish control. Though, for four generations the Spaniards had begun to feel successful in their endeavors of New Mexico. In early August, the sedentary and nomadic tribes banned together and overthrow the Spanish authority. There are many angles needed to be addressed in order to see why this happened. Historians and anthropologists have been trying to go beyond the bias history to uncover what happen. In the book “What Caused the Pueblo Revolt of 1680”, historians try to answer this question, some theories hold more pull then others in terms of what and why. Through reading this anthology I believe the revolt happened for cultural and religious reasons because the Spaniards were threatening the indigenous people’s very way of life through violence, exploitation of land/resources (food), and demoralization of their old ways and practices.
Sepúlveda, Juan Ginés de. Just War Against Barbarians. Essay. The Spanish Tradition in America. 1544.
Length of gestation (i.e., number of weeks in utero) and weight at birth are both related to birth risk. Demonstrate your awareness of key related concepts by discussing the concepts of prematurity, low birth weight, and extremely low birth weight.
The Spanish began their movement to Southwest America in the late sixteenth century. From that point on, their influence both on the Native Americans and the environment was extraordinaire. The goal of the Spaniards with regards to the Native Americans was to transform them “into tax-paying Christians.” This is in contrast to the idea that their goal was to eradicate the Indians form the Americas. Consequently, the Spaniards took many Indians so that they may plant their religion in the Natives and to use them as cheap labor. This led many Indians to learn the customs and language of the Spaniards so they could to be able to thrive in the Spanish culture. Thus, some Natives acquired Spanish, which was the main source of their Hispanicization; this was the notion of Indians becoming encompassed by the Spanish society. Furthermore, Indians gradually learned skills, obtained land, and sometimes found Hispanic spouses, thus furthering their Hispanicization. They now began to live in a Spanish manner and blend into the bottom of the Spanish societal ladder. This “acculturation” of the Native Americans was in contrast to the models of early English colonization. Spanish goals and plans sought to involve the Indians so that they may live in their society even if at the lower end of it’s ladder. English colonies viewed the Natives as savages and looked to them for slave labor or to rape their women. They did not plan to take the Indians into their society as the Spaniards did so throughout this era.
He wrote this speech during the labor movement in the intent to be listened by government so that they know that the workers had a voice. As he says “Certainly the workers that are being organized want a voice in the determination of these objectives of social justice.” “The rights of labor” speech was a turning point for u.s labor in the 1930’s. This speech ref...
...n their attempt to re conquer New Mexico later down the road. The Spanish tried to re conquer the land twelve years later using peace and scare tactics with a man by the name of Don Diego de Vargas. Not only were the events leading to Popes rebellion such as the encomienda system, forced labor, and the forcing of changing their religion and way of life in a short amount of time a great reason for the revolt. The revolt was also a starting ground for further rebellions and a blueprint of how to execute a rebellion successfully. When the revolt was over the Pueblos got what they wanted which was to be free of the Spanish and continue back to their own way of life. The following years were very difficult for the Indians starting with the rebuilding of their community. The Pueblo Revolt of 1680 was the greatest and most successful revolt in history of North America.
Reaction Rate Investigation Planning I am trying to work out the rate of reaction between marble chips (calcium carbonate) and Hydrochloric acid. This will be my plan of how to carry out my investigation. There are many factors, which I could change in this experiment. These are 1) Concentration. An increase in concentration means there are more particles.
being used up, for that is a property of a catalyst is, it speeds up a
For many years’ native people of the North America lived in peaceful in their homelands. However, one day the lives of the Native Americans would come to an upsetting stop. In June of 1540, Hernando De Soto, a Spanish explorer to led the first European expedition deep into the United States mainland in search of god, glory and gold. Hernando set to out to conquer the empire and to capture the Aztecs, .On his next journey out as govern, he encountered the native’s people. From that day forward, natives would adapt to the settlers ways and even involved themselves in wars.
Mexican American history began in the16th century under Spanish colonialism. The Spanish had a goal of conquest and colonization. Evidently, that goal was successfully accomplished because when the Spanish first arrived in 1492 Mexico’s population was fourteen million, but by the end of the 16th century it had drastically declined to one million. Numbers decreased because of the cruel treatment, forced labor, and disease brought by the Spanish. The Spanish eventually controlled most of the territory in the Southwest and over three hundred towns had been established for the purpose of control and conversion. The Spanish imposed conditions on the natives of Mexico that would belittle them. They aimed to convert them in order to make them re...
Colonization of the Americas was done by both the Spanish and English in the late 1400s to late 1500s respectively. They had quite a few similarities such as the hardships they encountered in their homelands that embarked them on their journeys to explore and even, in some ways, their rule over the new land had some likeness as well. The differences between them lie in the specifics of their exploration and their relationship with the Indian groups who already inhabited the space they took over. Even though each group had different motives and goals for their expedition, it is evident that both groups had their share of major conflicts with the native peoples and defining characteristics of their societies.
* Amount of acid – if there is more acid the rate of reaction will