Hard water

The reaction of soda ash (Na2CO3) with calcium sulfate in water is represented by the following chemical reaction: Na2CO3 + CaSO4 >>> CaCO3 + Na2SO4. Assuming that this reaction is complete and that there is 153 mg/l of CaSO4 initially present, what is the mass of soda ash that must be added to 1 liter of the water? How many grams of CaO are required to be the chemical equivalent of 246 g of Mg(HCO3)2? A complete reaction requires the number of CaSO4 to be equal to the number of moles…

a rather unusual physical phenomenon where hot water freezes faster than cold water, under certain conditions. Intuitively, this doesn’t make any sense. How could water of higher temperature reach freezing temperature quicker than water of colder temperature? Water freezes when it’s molecules lose energy and slow down enough to stick together, forming ice. The molecules of water of high temperature have more energy the molecules in the colder water. So, provided the temperature of the freezer is…

levels affect the quality of water because it affects the toxicity and the solubility of chemical substances and heavy metals. This causes the concentration of hydrogen ions in the water to change from the normal pH range for water of 6.5 to 8.5. This change causes the water quality to diminish because more harmful chemicals are dissolved in the water releasing toxins. The quality of water will ultimately decrease with these substances present. As well, if the water acidity…

Turbidity: - Turbidity is a degree of water clarity. Turbidity is defined as an “expression of the optical property that causes light to be scattered and absorbed rather than transmitted in straight lines through the sample”. Nephelometers are used to measure the intensity of light scattered by contaminants present in water such as suspended and colloidal solids like clay, silt and microscopic organisms. Turbidimeters using the principle of nephelometer compare the light scattered due to…

Swimming is a better sport to compete in than soccer. To begin with, you get to be in the water. Also, swimming helps your body. Swimming is a better sport to compete in than soccer for several reasons. I like this event for several reasons since swimming takes place in the water. To start off, the water makes you feel refreshed, even if you’re always using your legs. For example, the water feels nice and cool and is especially nice to be in on a hot day. Next, it makes your body feel not as…

population of the fishing in the waters would nothing to stop them from growing at a significant rate. A rate that makes the fish have to fight for food. They would bite anything that would touch the water, for example, “fish learn by trial and error what…

Knowing how to drive can be so much helpful, but is not always easy or comfortable. Driving in the winter or in the summer can be hard to deal with. Both of the seasons have their own cons or pros, things everyone has to deal with. Both of the seasons have a very particular climate that can make it hard to drive. Driving in the summer is not that bad as driving in the winter, but is still a challenge. The weather is just not good if you are not properly prepared. As everyone knows, summer has…

bottled water to have hard water as compared to the Dasani and tap water. Fiji water had the highest chlorine content, double that of tap water. Tap water and Dasani water had higher alkaline than the Fiji water. The tap water rated highest on the phosphate content test followed by Dasani with half as much phosphates followed by Fiji having the lowest phosphates. The iron test showed all three samples with small amounts of iron. Fiji water had the highest pH levels followed by tap water than…

quiet line for casting and retrieving. Various anglers wonder about the force of Spiderwire line and routinely report catching fish in overabundance of its test limit truly without trouble. It an in-vogue line for utilization in a few salt drinking water fishing circumstances. This line made for a spinning reel or baitcasting reel is distinguished for its smooth braid. This smoothness helps it to coast quickly by means of the h2o however minimizing the reel injury that some braided lines can…

from automobile exhaust” (Dictionary, 2016). Because of our atmospheric pollution, when smog is present and it begins to rain, the rain traps the chemicals and brings them down to the earth’s water…