Calculate the mass of stearic acid if it takes 52 drops to cover the surface. Given a stearic acid concentration of 0.000025 g/mL and 100 drops/mL.
Calculate the mass of stearic acid if it takes 52 drops to cover the surface. Given...
A calibrated pipet (95 drops/mL) delivers 12 drops of stearic acid solution. (1.5x10^-4 g/mL) to give a monolayer with a diameter of 12.5 cm. Calculate the surface area of tge monolayer, the moles of stearic acid (284 g/mol) in the monolayer, the number of stearic acid molecules in the monolayer, and the apparent volume & cross-sectional area occupied by each molecule.
A Fatty Acid Monolayer Calculations The number of drops per mL (drops/mL) can be calculated from thre measured number of drops per gram of Hexane (drops/g), using the density of Hexane (0.659 g/mL) as a conversion factor from grams to mL. Calculate this using the following information. Area(A)=1.227*10^16 Concentration of Stearic Acid/Hexane Solution: 7.01* 10^-5 Mass of weighing bottle with lid= 18.028g Mass of weighing bottle, lid and solution= 18.463 Solution Mass: 0.435 I'm getting mL per drop, and can't...
Esay recorded the following data for Avogadro's number experiment. He concluded that the average calibration number of drops from dropper per mL is seventy-seven. Next, Esay determined it took twelve drops of stearic acid solution to form the monolayer. Density of stearic acid = 0, 85 g/mL Concentration of stearic acid solution= 1.42 times 10^-4 g/mL Diameter of the vessel 14.5 cm Molar mass of stearic acid = 284 g.mol a. Calculate the volume of stearic acid needed to form...
1.0345 g of palmitic acid dissolved in 8.7545 g of stearic acid. Calculate the freezing point of the solution. The molar mass of palmitic acid is 256.48 g/ mol. The molal freezing point constant , Kf for stearic acid is 4.5 degrees C/ m and pure stearic acid freezes at 69.3 degrees Celsius.
Posta Posr Lab Questions 1. What is the mass or 5.47 mole of stearic acid? (MW-284 g/mol) 2. The density of stearic acid is 0.870 g/mL. What is the volume of 7.8 x 10 mole of stearic acid? 3. What assumptions were made in this experiment to arrive at a value for Avogadro's number? 4. What is the mass, in grams, of one molecule of stearic acid? E ating Avogadro's Number Answer the following questions about the graph and data...
You determined the molar mass of an unknown fatty acid 3 dissolved into stearic acid to be 219.4 g/mol. Unknown fatty acid 3 was myristic acid, which has a molar mass of 228.37 g/mol. What was your percent error to the correct number of significant figures?
An astronaut drops a 3.6kg object onto the surface of a planet. It takes 2.6s to fall 1.86m to the ground. If the planet is known to have a redius of 8.4*10^6m. What is its mass?
3. Calculate the concentration of HCl if it takes 38.94 ml of 0.1548 M KOH to turn 25.00 ml of the acid containing a couple of drops of phenolphthalein pink, pH reaches 7.000.
Given a solution of 5.0% by volume oleic acid in alcohol: Two drops (100 drops /cm^3) are placed on a water surface and a continuous, circular film is formed 16.0 cm in diameter after all the alcohol has evaporated and the oil is distributed evenly on the surface. What would be the thickness of the layer of pure oil?
do you know what i did wrong on this
PART I: Calibration of a Dropper Pipet Trial 1 58 Trial 2.62 1 Number of drops in 1-ml Trial 603 el 2. Average value PART II: Number of Molecules in the Monolayer 2.45cm 4.ssim GO 1 Diameter of the monolayer, cm 2. Number of drops to form monolayer 5+2= 3. Area of the monolayer, cm? 4. Concentration of the stearic acid, g/mL 5. Volume of the stearic acid in the monolayer,...