Please help me, I need help answering this. Thank you so much!…

Question Answered step-by-step Please help me, I need help answering this. Thank you so much!… Please help me, I need help answering this. Thank you so much!  Please read thoroughly the given optionsMultiple Choice: Write the letter of the best answer 1. In gravimetry, constant weight means:A. there is absolutely no difference between two consecutive weighings of the sample.B. there is not less than 0.5 mg per gram difference between two consecutive weighings of the sampleC. there is not more than 0.5 mg per gram difference between two consecutive weighings of the sampleD. there is not more than 0.5 mg difference between two consecutive weighings of the sample 2. Ignition is performed in _________________ unless otherwise indicated in the individual monograph. A. bright red heatB. dull red heatC. yellow red heatD. white heat 3. A 20-g sample of Milk of Bismuth USP was placed in a crucible with a constant weight of 32.4316 g, evaporated to dryness, and ignited to constant weight. The constant weight of crucible with the pale yellow residue is 33.3801 g. Milk of Bismuth contains bismuth hydroxide and bismuth subcarbonate in an aqueous suspension yielding not less than 5.2 and not more than 5.8 percent (w/w) of bismuth trioxide (Bi2O3). What is the percentage (w/w) of bismuth trioxide in the sample? (m.w. Bi(OH)3 = 260 g/mole; (BiO)2CO3 = 509.97 g/mole; Bi2O3 = 465.96 g/mole) A. 2.65%B. 4 33%C. 4.74%D. 5.19% 4. What is the percentage purity of a 0.3160-g sample of sodium chloride when 0.7732 g of silver chloride is found after precipitation with silver nitrate solution and drying to constant weight? (m.w. AgCI = 143.32 g/mole; NaC| = 58.44 g/mole) A. 69.78%B. 79.78%C. 89.78%D. 99.78% 5. What is the gravimetric factor in the above assay? A. 0.2039B. 0.4078C. 1.2262D. 2.4524 Chemistry Science Organic chemistry CHEMISTRY 8562 Share QuestionEmailCopy link Comments (0)