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- Which of the following statements is false?A. Temporary hardness is the hardness caused by calcium and magnesium carbonate and bicarbonates.B. Temporary hardness can be removed by boiling water.C. Permanent hardness is the hardness due to chloride, nitrate, sulphate, silicate and phosphates of calcium and magnesium.D. Among the hardness units, there is equation 1.25 AS = 1 IS = 1.79 FS.Would coat the paper with a nanoparticle offers any advantage? If yes, what could be the drawback of using nanoparticles on a filter-cone paper for ionization?The mass of the original mixture was 2.03g. The combined mass of the salt and the evaporating dish was 48.92g with the tare mass of the evaporating dish being 47.98g. The combined mass of the sand and watch glass and filter paper was 32.15g with the tare mass of the watch glass being 30.91g and of the filter paper being 0.28g. A) calculate the percent of table salt in the recovered material. B) calculate the percent table salt in the original mixture
- What are the types of gravimetric methods? Give an examples where each method is used in an analysis. What is particulate gravimetry? When do we use this technique?1. State the process that is used to separate kerosene and diesel fuel. State the operating conditions of this process. 2. State the process that can be used to yield fraction of heavy fuel oil from crude oil. 3. Describe the difference between straight run naptha and cracked naptha.A sample of an iron ore was prepared for Fe3+ analysis as following: 3.4g of the sample was added anddissolved in acid environment then diluted to 250 mL using volumetric flask. After that, 10 mL of the resultingsolution was transferred by pipet to a 50-mL volumetric flask and continue to be diluted. The scientists foundout that this solution gives the concentration of Fe3+ as 2.3 mg/L. Find the weight percentage of Fe3+ in theoriginal sample.