Αποτελέσματα Αναζήτησης
29 Αυγ 2023 · You will need the prefixes in order to give a proper name of many compounds. You also need to know them to figure out the formula from their names. The common prefixes are given in this Table.
Theory Water Hardness is the amount of minerals contained in water, and the different methods of filtering are used to prevent the buildup of these minerals. EDTA titration is used for water analysis to check the levels of metal ions in the water.
se prefixes to represent multiples of 10 times the unit. The prefixes deci (d) for one-tenth, centi (c) for one-hundreth, milli (m) for one-thousandth, and micro (the Greek letter μ or Latin mc) for one-millionth are used for smaller units (less than 1), while kilo (k) is used for larger unit.
Recognize the common unit prefixes and use them to describe the magnitude of a measurement. Describe and calculate the density of a substance. Perform basic unit calculations and conversions in the metric and other unit systems.
Milligrams per liter (mg/l) of water are used for substances like metals and nitrates. A milligram per liter is also equal to one part per million (ppm)—that is one part contaminant to one million parts water. About 0.03 of a teaspoon of sugar dissolved in a bathtub of water is an approximation of one ppm.
To positively identify the source of contamination prob-lems, as well as to determine the type of corrective action to take, a properly interpreted water analysis report is essential.
For each reactant, the correct name, formula, source, grade or stated purity, weight (or volume and density in case of a pure liquid, or volume and concentration in case of a solution), should be recorded. Standard data (m.p., b.p., etc., of reagents are not necessary. In addition, the volumes of any reaction solvents used should be specified.
