Introduction When iron is mixed to Copper (Ⅱ) Chloride; the product will be copper and iron chloride. However‚ in this experiment‚ we do not have the information of the oxidation number for iron nails. There are 2 different oxidation numbers for iron; that are 2 or 3. We will need to check each of the equations to find out the moles of each element in the equation. Then we can compare the ratio between the mole and the mass of iron and copper; that will be measured during the experiment. Finally
Free Stoichiometry Iron Yield
When NaCl solution is dissolved in water‚ the solution conducts very well‚ because the solution contains ions. The ions come from the table salt‚ whose chemical name is sodium chloride. Sodium chloride contains sodium ions‚ which have a positive charge‚ and chloride ions‚ which have a negative charge. Because sodium chloride is made up of ions‚ it is called an ionic substance. After completing the experiment and plotting each conductivity value I found that as the NaCl increased in concentration and
Premium Sodium chloride Salt Sodium
headed out to the garden ready to get rid of the slugs. As he walked over to the garden Johnny noticed the words sodium chloride on the side of his salt container. 1) Where has Johnny seen those words before? Johnny has seen the words sodium chloride before in his science class. Johnny thought back to science class and
Premium English-language films American films Mother
What is sensitive period and the environment required for sensitive period At birth the child ’s physical development is more or less complete while psychologically it is still in the embryonic state. For this reason Dr. Maria Montessori called that the human being is still a "spiritual embryo" when it is born. "Man seems to have two embryonic periods‚ one is prenatal like that of the animals; the other is postnatal and only man has this." -The Absorbent Mind‚ p55‚ Chapter 7. “A child possesses
Premium Maria Montessori
Anglo Saxons Time Period and Weapons The Anglo-Saxons are an ancient people that had and still have an impact on the world. The Anglo-Saxons came over from Europe and raided England from approximately 500 A.D. to 1000 A.D. bringing with them their culture and their brutal style of warfare. Historians call this period the Anglo-Saxon period of England. During the Anglo-Saxon period the society revolved around warfare and various types of weapons that supported the warring nature of the people
Premium Middle Ages Infantry Weapon
Betty Abebe Ethiopia: Population Pyramid For my population pyramid I looked up the country Ethiopia. Ethiopia is still a developing country so the shape that there population pyramid forms is a triangular. Ethiopias fertility rate is about 5.31 child(ren) per women. This shows that Ethiopias population is both growing rapidly in size and declining in median age. When you look at the population pyramid you notice a few strange things. The country is mostly by a large based of young people. For
Free Demography Population Infant
PERIODS 4 - 6 PERIOD 4: During period 4 it was apparent that we maintained our primary focus on the grocery stores since the majority of our sales force was there. Realizing that it was one of our biggest marketers‚ we continued to increase in this area (increasing by 8% during this period). We realized at this point that when looking at sales force numbers‚ we were one of the lowest ones and we thought that if we could bump our total sale force from 183 to 190‚ and then for our next decision
Premium Marketing
Project 3.2.2: Digestive System Design Introduction During his or her lifetime‚ the average person eats his/her way through at least 20 tons of food. Meats‚ vegetables or sweets - whatever your diet‚ that’s 40‚000 pounds! Our digestive system works to turn this enormous amount of food into substances that the body can use for energy and for growth and repair. But what actually happens to these foods once they enter our bodies? How does the body process each tasty bite and harness the power locked
Free Digestion Digestive system Stomach
Set No. 1 1. The orbital period of an Earth satellite is 106 min. Find the apogee altitude if the perigee altitude is 200 km. 2. Find the orbital period of a satellite if the perigee and apogee altitudes are 250 km and 300 km‚ respectively. 3. Find the maximum and minimum orbital speed of the Earth if the eccentricity of the Earth’s orbit around Sun is 1/60. What is the mean speed if the mean radius is 1 AU? (Sun’s Gm1=1.327x10 11 km3/s 2.) 4. Given the orbital period of Mars around Sun as 687 Earth
Premium Earth Mars Satellite
Chapter 3 PERIODIC TABLE AND PERIODICITY OF PROPERTIES Q.1 What are the contributions of Dobereiner‚ Newland‚ Luthar Meyer and Mendeleef in the present shape of long form periodic table ? Dobereiner’s Triads : In 1829‚ a German scientist‚ John Dobereiner classified specific elements into groups in order of increasing atomic masses. Each group has three elements. He named these groups as triads.He noticed that the atomic mass of the middle elements was found to be approximately equal to the
Premium Periodic table