2 grams of reactant A (150 ol) reacting with 2mL of reactant B &L) to give 1 gram of molecule C(300 ol). Assuming m m that the equivalent ratio between A to B is 1:1. Show your calculations. m J C 2 grams of reactant A (150 g/mol) reacting with 2 mL of reactant B (200 g/mol, 1.5 g/mL) to give 1 gram of molecule C (300 g/mol). Assuming that the equivalent ratio between A to B is 1:1. Show your calculations.
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- Over time, as their free fatty acid (FFA) content increases,edible fats and oils become rancid. To measure rancidity, the fator oil is dissolved in ethanol, and any FFA present is titrated withKOH dissolved in ethanol. In a series of tests on olive oil, a stocksolution of 0.050 Methanolic KOH was prepared at 25C, storedat 0C, and then placed in a 100-mL buret to titrate any oleic acid[CH₃(CH₂)₇CH=CH(CH₂)₇COOH] present in the oil. Each offour 10.00-g samples of oil took several minutes to titrate: thefirst required 19.60 mL, the second 19.80 mL, and the third and fourth 20.00 mL of the ethanolic KOH.(a) What is the apparent acidity of each sample, in terms of mass% of oleic acid? (Note:As the ethanolic KOH warms in the bu-ret, its volume increases by a factor of 0.00104/C.)(b) Is the variation in acidity a random or systematic error? Ex-plain.(c) What is the actual acidity? How would you demonstrate this?In synthesis of Aspirin, 2C7H6O3 + 4C4H6O3 ---> 5 C9H8O4+ 6C2H4O2 SA+AA--->A+AAcid If used 3.0g of SA and 6.0 ml of AA and obtained 1.306 g of aspirin Calculate the mass of acetic anhydride used? I am getting confused because the mass is in ML How do I calculate this mass whenn it is in ml?What is the concentration in units of grams of dye per liter of solution ,of the dilute dye solution that is produced as follows? transfer 19.53 ml of stick solution (6.10g/L) to a 200.0Ml volumetric flask and dilute to the 200 ml line with deionized water. Correct number of significant figs
- I asked this question earlier but I think I forgot to include a conversion wht we know : mm of citrix acid = 192.14g/moldensity of citrix acid =166g/cm3 1 lime = 2tbsp of juice = 6 tsp 1tsp = 4.929x10-3L Q: assume citrix acid makes up 7.96% by volume of the lime juice . How many moles of citrix acid are in the recipe ( calls for 1 lime juice)You are asked to perform a dilution of β-carotene. It has a molecular weight of 536.888 g/mol. a Calculate the grams of β-carotene needed to create 100 mL of a stock solution with a concentration of 2.3*10-3 M. b Calculate the mL needed from the above stock solution to create 100 mL of a solution with a concentration of 1.15*10-4 M.The alcohol content of hard liquor is normally given in terms of the “proof,” which is defined as twice the percentage by volume of ethanol (C2H5OH) present. Calculate the number of grams of alcohol present in 1.00 L of 75-proof gin. The density of ethanol is 0.798 g/mL. Round off to 4 sig. figures for all calculations made prior to final answer and the final answer should be in 3 sig. figures
- The 1875 Chamber Street fire claimed many victims. A whiskey distillery in Dublin went into flames and released a river of whiskey, crowds gathered along the stream of alcohol to scoop up the liquor using caps, porringers, and other vessels. In all, 13 people died, not because of the fire, but ofalcohol poisoning. a. If the average human weights 137 pounds, the Human LD50 of ethanol is ~2000mg/kg. And the typical content of alcohol in whiskey is 40% . How much alcohol does the average human must drink to succumb to alcohol poison. Assume the density of whiskey is 1 so that 1 ml of whiskey is 1 gram of whiskey. In addition, assume that the LD50 is the amount required to succumb to alcohol poison.The process of Distillation is able to concentrate ethanol because: a. the boiling point of ethanol (78oC) is lower than the boiling point of water (100oC) b. CO2 is a gas that occupies ~22 liters per mole whereas ethanol is a liquid dissolved in water c. adding egg white traps CO2 bubbles which allows them to be separated from alcohol d. Sodium Aluminum Phosphate binds ethanol and concentrates it e. distillation removes the reducing equivalents “H2” from ethanol and lowers the calorie content making “light” calorie beveragesI would need help with these questions. Caffeine Std (ppm) Absorbance (270 nm) 1 0.179 2 0.39 3 0.673 4 0.787 Soda #1 0.233 Soda #2 0.417 Graphically find the concentration in ppm and then calculate in mol/L of Soda #1 and Soda #2?
- On an emergency cart, you have sodium bicarbonate solution (NaHCO3), 44.6 mEq/50 ml. A physician orders an aerosol of 5 cc and 3.25% strength. How many milliliters of the bicarbonate solution do you need? 1 mEq=1/1000 GEW; GEW= gram formula wt/valence Atomic weights: Na, 23; H, 1; C, 12; 0, 16What is the mas of 25.0ml of octane? D=.702g/cm3b) % yield of ethanol from molasses (we used 50 mL of the molasses solvent for both distillation) c) % yield ethanol from sugars, assuming approximately half of molasses is reactive sugars C12H22O11 (sucrose) -> 4 CH3CH2OH + 4 CO2 my Simple distillation % ethanol was 100% (0.774) and my fractional distillation % ethanol was 100% (0.774).