Calcium Essay Topics

Ap Chemistry – Gravimetric Lab

By filtering and weighing the carbonate after it has precipitated, the mass and moles of CaCO3 could then be found; with these values, a molar mass of M2CO3 can be found. Using gravimetric analysis, it has been determined that the unknown Group 1 metal carbonate compound is K2CO3 (potassium carbonate). Experimental Sources of Error: A)… View Article

Stoichiometry Of A Precipitation Reaction

Procedure 1. Put on your goggles. 2. Weigh out 1.0 g of CaCl2·2H2O and put it into the 100-mL beaker. Add 25 mL of distilled water and stir to form the calcium chloride solution. Use only distilled water since tap water may have impurities that interfere with the experiment. 3. Use stoichiometry to determine how… View Article

Complexometric Determination

Introduction Using a Lewis base neutral molecule to donate electron pairs (ligands) to a Lewis acid metal ion center to form a single cluster (complex) ion. When the complex ions forms with a metal ion (chelation) the ligand used is called the (chelating agent). EDTA acts as a great chelating agent due to the Nitrogen… View Article

Soaps and Detergents

The goal of this project was to make, and test four soaps, and two detergents. The purpose of making four different soaps and two detergents was needed in order to decide which one would be best for the environmental group to use in the future that would allow for the safest cleanup of an oil… View Article

Pchem Formal Report

Synopsis: The main aim of the experiment is to find out the amount of calcium carbonate in toothpaste through back titration since calcium carbonate does not dissolve in water. A roughly weighed amount of calcium carbonate is mixed with hydrochloric acid and then titrated against sodium hydroxide. When the indicator turns from pink to orange,… View Article

Osteoporosis and Bone

Calcium helps to keep bones strong but just drinking milk doesn’t mean that you won’t get osteoporosis. You may be genetically inclined to get it even though you drink milk every day. There are also many other things that contribute to getting osteoporosis, like not eating enough calcium, doing steroids causes bones to become weak… View Article

Determination of the Solubility of Calcium Hydroxide

1. Roughly fill a beaker with 200cm? of distilled water. This does not need to be accurate because samples will be taken from this. 2. Add solid calcium hydroxide, a spatula at a time, and stir to aid the dissolving. 3. Continue to add the calcium hydroxide until no more will dissolve i. e. you… View Article

Kidney Stones, is there a solution?

Introduction Kidney stones are a painful and dangerous urinary disorder that could cause severe cramping, block flow of urine, and sometimes cause a fever that “about 5 % of American women and 12 % of men suffer from at some point in their lives” (Kidney Stone Disease). “Most small stones measuring less than 5mm or… View Article

Hardness of Water

The hardness of water was determined using the methods of titration, conductivity, and pH analysis. The mean and uncertainty of CaCO3 is 134±36.0 ppm. An error that could have potentially happened could be that the equivalence point was not correctly established causing inaccurate data. BACKGROUND: 1In hard water there is a high amount of mineral… View Article

Percent Yield of Calcium Carbonate

The purpose of this experiment is to examine the percent yield of a precipitate in a double displacement reaction. A solution of calcium citrate and sodium carbonate were mixed together, then the products were filtered out as so only the precipitate remained. The filtered paper was then dried and the mass of the precipitate in… View Article

Naming the Minerals

Name the minerals below. Then, insert a percentage of how certain you are in your identification. Finally, explain your percentage of certainty: What was confusing about this mineral? What other minerals do you think it could be? Remember, the minerals in the virtual lab include seven of the following: borax, calcite, corundum, graphite, gypsum, orthoclase… View Article

“Happy Cows”

Discussion Questions After analyzing the “Happy Cows” campaign, that was developed for the California Milk Advisory board to promote Real California Cheese, I feel the campaign has been so successful is because they found a way to connect with customer base by creating character (the cows) that everyone can relate to. Another reason, is that… View Article

Complexometric Determination of Water Hardness

When a polyatomic ligand with multiple lone pairs of electrons available for bonding to a central metal ion forms a complex with a metal ion, a process known as chelation takes place. Metal ion impurities can be found by using disodium salt of EDTA to determine the concentration of M2+ by complexometric or chelometric titration…. View Article

Complexometric Determination of Water Hardness

Abstract The water hardness for unknown water sample number 40 was determined. From the results of the two complexometric titrations, the water hardness of the unknown sample was calculated to be 250.9 ppm CaCO3, which agrees with the ranges of acceptable water hardness in the city of Phoenix and Tempe Arizona. Introduction When rainfall picks… View Article

Complexometric Determination of Water Hardness

The water hardness for unknown water sample number 40 was determined. From the results of the two complexometric titrations, the water hardness of the unknown sample was calculated to be 250.9 ppm CaCO3, which agrees with the ranges of acceptable water hardness in the city of Phoenix and Tempe Arizona. Introduction When rainfall picks up… View Article