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- Consider Palmitic acid C16H32O2, a common fatty acid used in the manufacture of soap. A solution of palmitic acid is prepared by mixing 112 g palmitic acid with 725 mL of benzene C6H6. The density of the resulting solution is 0.902 g/mL. Palmitic acid (molar mass = 256 g/mol and density = 0.852 g/mL); Benzene (molar mass = 78 g/mol and density = 0.879 g/mL) You are to prepare 250 mL of the said molar concentration. If you have an available 2M stock solution of Palmitic acid. How many mL of solvent do you need to add to the amount gotten from the 2M Palmitic acid stock solution in order to prepare 250 mL total volume of your desired solution?Consider Palmitic acid C16H32O2, a common fatty acid used in the manufacture of soap. A solution of palmitic acid is prepared by mixing 112 g palmitic acid with 725 mL of benzene C6H6. The density of the resulting solution is 0.902 g/mL. Palmitic acid (molar mass = 256 g/mol and density = 0.852 g/mL); Benzene (molar mass = 78 g/mol and density = 0.879 g/mL) You are to prepare 250 mL of the said molar concentration. If you have an available 2M stock solution of Palmitic acid. How many mL of the 2M palmitic acid stock solution will you need?The molecular formula for glucos is C6H12O6 and BENZENE HAVE C6H6. What are their respective empirical formulas
- A sample of an organic compound (a nonelectrolyte) weighing 1.35 g lowered the freezing point of 10.0 of benzene by 3.66 C. Calculate the molar mass of the compound.Ascorbic acid (C₆H₈O₆) is also known as Vitamin C. What quantity in molecules of C₆H₈O₆ does a Vitamin C drink with 1025 mg C₆H₈O₆ contain?Analysis of a carbohydrate showed that it consisted of 40.0 % C, 6.71 % H, and 53.3 % O by mass. Its molecular mass was found to be between 140 and 160 amu. What is the molecular formula of this compound?
- Ferrocene, Fe(C5H5)2(s), can be prepared by reacting 3.0 g of FeCl2(s) with anequal mass of cyclopentadiene, C5H6(l), and an excess of KOH, as shown in thefollowing reaction FeCl2 + 2C5H6 + 2KOH → FeC10H10 + 2H2Oa. What is the limiting reagent in this procedure?b. Based on your answer to part A, what mass of Fe(C5H5)2 couldtheoretically be formed?c. A student who carried out this reaction obtained 2.7 g of ferrocene. Whatwas the percent yield for this reaction?The active ingredient in Tum is calcium carbonate. a). What is the chemical formula of calcium carbonate?. b, what is the molar mass of calcium carbonate? c. How many moles of calcium carbonate are in one roll of Tums that contains 12 tablets? d). If the Daily Value (DV) for Ca^2+ to maintain bone strength in older women is 1500 mg, how many Tums tablets are needed each day? f). What is the mass percent composition of calcium carbonate?.General formula of a polymer is-(CH2CHCHCN)n-, where n is typically greater than 10,000. Then take a sample of this polymer weighs 755.9 g and contains 3.112 x 1020 molecules of -(CH2CHCHCN)n-, so calculate n?
- A sample of unknown hydrate, AC·XH2O, has a mass of 1.000 g before heating and a mass of 0.781 g after heating. If the molar mass of the anhydrous compound (AC) is 195.5 g/mol, what is the water of crystallization for the formula of the unknown hydrate? In other words, what is the X in the formula: AC·XH2O?When the following compound is placed in water, K3PO4 the formula of the products, their physical state each enclosed in parentheses { i.e., (s), (ℓ), (g) or (aq) }, and the coefficient (if any) denoting how many of each product forms.A student is running an experiment in which 28.5 grams of Na2CrO4 is needed, but the only jar of reagent in the lab is labelled sodium chromate decahydrate. How many grams of the hydrate must the student weigh out in order to get the desired amount of the anhydrous compound?