Description Whenever we do experiments‚ the actual result is a little different from the result we predicted. In chemistry‚ this discrepancy is compared by calculating the percent yield. In this lesson‚ we will define percent yield‚ and go over a few examples. !!!What is Percent Yield? Sometimes you look at a recipe and it says how many servings it will make if you follow the amounts listed on there. There are times‚ however‚ that the number of servings after you have made the food is not the
Premium Chemistry Chemical reaction Acid
SALTS EVERYDAY First some words about salts in chemistry. Salts are ionic compounds that can result from the neutralization reaction of an acid and a base. They are composed of related numbers of cations (positively charged ions) and anions (negative ions) so that the product is electrically neutral (without a net charge). Salts can appear to be clear and transparent (sodium chloride)‚ opaque‚ and even metallic and lustrous (iron disulfide). In many cases the apparent opacity or transparency are
Premium Ammonia Potassium
Worksheet - Acids‚ Bases and Salts 1. I am pure water. When heated my pH (increases‚ decreases)‚ because more of my water molecules dissociate. 2. I am a 0.020 M solution of weak acid‚ HA. If I only dissociate to the extent of 1.50%‚ what is the value of my Ka? 3. I am a 0.20 M solution of hydrocyanic acid‚ HCN‚ with a Ka of 4.93 x 10¯ 10 . What is my pH? 4. I am a buffer made from 0.10 M acetic acid and 0.15 M sodium acetate. If the Ka for acetic acid is 1.77 x 10¯ 5 ‚ what is my pH? 5. I am
Premium Acid Acid dissociation constant Acetic acid
Title: Prep of t-Butyl Chloride via SN1 Reaction Purpose: The purpose of this experiment is to synthesize tert-butyl chloride via an SN1 reaction. t-Butyl Chloride was synthesized from t-Butyl Alcohol using hydrochloric acid in separatory funnel; isolation of t-Butyl Chloride was done under distillation conditions. The experiment resulted in 8.29grams of purified compound‚ which is a 66.27 percent yield. Procedure: As per handout with changes Equation: Mechanism: Results: (Scan
Premium Solvent Alcohol Distillation
Percent Copper and Formula of a Copper Compound Sofia Economides Date Preformed: 3/19/2012 Date Submitted: 3/26/2012 Lab Partners: Anita Smith‚ Taylor Bell‚ Derek Bourgeois 1. Purpose a. To determine the percent of copper and the formula weight of a copper compound. 2. Introduction a. Magnesium is a very active metal which can reduce copper (II) ions in a weight sample of a compound to metallic copper. The reduction of copper ions in a compound to a copper metal
Premium Copper Mass Hydrogen
The Great Salt Lake The Great Salt Lake is a wonder of its own. Made by the remnants of Lake Bonneville‚ this lake is unique to Utah and has many different characteristics that make it this way. Have you ever wondered how big the Great Salt Lake really is? It is one of the largest lakes in America. The Great Salt Lake is about seventy-five miles long and twenty-five miles wide. Even though the deepest spot in the lake is thirty-four feet the average depth of the Great Salt Lake is around 13 feet
Premium Great Salt Lake
Keeping Your Body Hydrated During Hiking Trekking involves more physical work. During trekking we keep climbing‚ it’s a kind of work out to our body. Since we are doing it for a hours‚ a large amount of water content from a body will be lost. So it is very necessary to keep our body hydrated while we are on trekking. We should make sure that our body has enough water content or otherwise it will effect our health badly. When we are climbing up there will be short of oxygen since it is a high altitude
Premium Water Nutrition Dehydration
The Salt Sector of Pakistan | API Final Report | BBA 4 | Date of Submission:June 11‚ 2012 | Submitted to: Ms. Tahira Jaffery | Submitted by:Fariha KhalidHafsa AlviSundus IftikharSyeda Hafsah HasanSyed Aqib Shah | Executive summary The purpose of this report was to examine the export related problems prevalent in the salt sector of Pakistan. Research for this report included interviews with the salt exporters and manufacturers in Pakistan. We interviewed‚ Mr. Ismail Suttar of Hub Salt
Premium Salt Sodium chloride
WATER OUR LIFELINE Water is a transparent fluid which forms the world’s streams‚ lakes‚ oceans and rain‚ and is the major constituent of the fluids of living things. As a chemical compound‚ a water molecule contains one oxygen and two hydrogen atoms that are connected by covalent bonds. Water covers 71% of the Earth’s surface.[1] It is vital for all known forms of life. On Earth‚ 96.5% of the planet’s water is found in seas and oceans‚ 1.7% in groundwater‚ 1.7% in glaciers and the ice caps of Antarctica
Premium Water
Katie Paez Marine Science Salt Marsh Essay Salt marshes play vital roles in coastal areas‚ such as Westhampton‚ Southampton‚ Hampton Bays‚ and many other locations. Let’s look at the global effects of salt marshes. A study from September of this year published in UVAToday shows that the carbon stored in salt marshes may help in slowing global climate change. Carbon dioxide is the predominant so-called “greenhouse gas” that acts as sort of an atmospheric blanket‚ trapping the Earth’s heat. Over
Premium Coast Soil Climate change