1.0 g of a mixture containing 80% CuSO4.5H2O is taken and heated to 120 oC and 160 oC. According to this, find the weight reductions percentages a) at 120 oC, b) at 160 oC
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question 1/
1.0 g of a mixture containing 80% CuSO4.5H2O is taken and heated to 120 oC and 160 oC. According to this, find the weight reductions percentages
a) at 120 oC,
b) at 160 oC
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- Prior to fat analysis, two samples: Sample 1 and Sample 2 with the initial weight for each sample=2.50g. After pre-dried, samples were grinded and reweighted; s1-2.15g and s2=2.11g. Samples were placed in dried glass wool in each thimble and placed extractor for 4-5 hours. Samples were then dried and cooled in desiccators before another weight recorded. The weight for s1=93.51g and for s2=93.78g #Weight of round bottom flask (with glass wool+ thimble) (g) = 92.00 #Weight of round bottom flask (g) =91.00 1) Calculate the percentage of dried fat in s1 2) Calculate the percentage of dried fat in s2. 3) Sample 3 have dried fats of 50%. Identify the correct sequence from the highest to the lowest % of dried fats in sample.2.1g of sample are dissolved in methylene chloride and the sample is extracted with aqueous solutions of acid and base. Three compounds are isolated - 0.8g of ethyl p-aminobenzoate, 0.6 g of acetanilide, and 0.5 g of benzoic acid. Calculate the % recovery for the procedure. (Round the answer to the nearest tens place.) Give just the number, not a % sign.)In 2017, the atmospheric mixing ratio of CO2 is approximately 410 ppmv. In order to bring the concentration down to pre-industrial levels (275 ppmv), how many teragrams (Tg) of carbon need to be sequestered? (1 ppmv of CO2 = 2184.82 Tg of C)