Hard water

Growing up in a Latino household is hard. My parents only spoke Spanish therefore my first language was Spanish. For the first few years of my life this was not really a problem, I enjoyed life as any normal little girl would. I got to talk to all of my cousins and all of the neighbor’s children. It wasn’t until I got to school that it became real that I was going to learn English. Don’t get me wrong I always knew I had to learn English my parents always talked to me about school and helped me as

procedure for each of these sections can be found in the PSU Chemtrek.5 In Section A, Atomic Absorption Spectroscopy was used to determine water hardness. I filled two pipets with my water sample to perform the Ca2+ analysis and the Mg2+ analysis separately. The absorbance values for both elements are then calculated using the process described in the introduction.5 Some water samples needed to be diluted due to their high concentration of ions but this was not the case for my sample. In Section B, we evaporated

data and results of calculation from this experiment, the empirical formula that was found during the process is CuSO4 * 5H2O. The sum of the percentage from the water, copper, and sulfate found in the solution added up to be 102%, a little over the normal 100%. From the least to greatest percentage of error, copper (Cu) with 2.291%, water (H2O) with 2.77%, and sulfate (SO4) with the greatest percentage of error of 3.691%. Overall, the percentage of error were made during this lab is acceptable. There

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Water is measured in milligrams per liter or parts per million. In Table 1, the guidelines for classification of water hardness can be found. This table shows the different amounts of CaCO3, calcium carbonate, in mg/L that cause water to be soft too hard. Hardness in mg/L CaCO3 Degree of Hardness 0 – 30 Very soft 31 – 60 Soft 61 – 120 Moderately soft/ moderately hard 121 – 180 Hard >180 Very hard Table 1.4 General guidelines for classification of water hardness Two methods that

analysis (table 2) show that tap water Mifflin hall, well water Wyckoff and stream water Raleigh has a higher amount of total dissolved solid compared to tap water Harleysville and Tap water Yosemite that have a low amount of total dissolved solid. From these observations, we can conclude that tap water Harleysville and tap water are softer than Yosemite tap water Mifflin Hall, well water Wyckoff and stream Water Raleigh. The Results from ETDA (table 7) show that tap water Mifflin Hall (400 ppm) is hardest

Distilled water and your skin You may well have spent hundreds or even thousands of pounds on cleansers, toners and different types of tonics all in the name of clear skin. On top of this you may have put in a lot of time religiously washing those spot prone areas, scrubbing, dabbing and using the special round circular motions all in an attempt to clear up those pesky break outs and yet, despite all your best efforts, it doesn’t work. As a result, you’re left out of pocket and still struggling

Introduction: Water is an important substance that is needed all around the world. Freshwater is not completely pure though. It has dissolved solutes from minerals, and gases from the atmosphere. The presence of dissolved ions in water gives it a chemical property that is called water hardness. Water hardness refers to a liquid that has a high concentration of minerals, but those minerals are typically Ca2+, and Mg2+. Water that has a very low concentration of these elements is called “soft”. This

not, water is surrounding us in different forms everywhere. Water actually makes up about 70% of Earth. Water is overall known as a good solvent that dissolves minerals it comes in contact with. As water moves through earth, it dissolves minerals and holds them in solution. The amount of metal cations, such as Calcium (Ca^2+) and Magnesium (Mg^2+) in water became known as water “hardness”. Water hardness can be detected by white residue and crystal like rocks when heated. Understanding water hardness