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- The molecular formula of aspartame, the artificial sweetener marketed as NutraSweet Ⓡ, is C14H18 N2O5. How many moles of aspartame are present in 4.50 mg of aspartame? Express your answer using three significant figures. | ΑΣΦ n= ? molIf the osmotic pressure of the blood is within (100 psi) at a temperature of (37°C). How much glucose must be used per (L1) for intravenous purposes so that its osmotic pressure equals the osmotic pressure of the blood. Note that,R = 0.0821 L. atm. K-1. mol and the molecular weight of glucose g/mole 180In 12.0 g of carbon, there are NA = 6.02 x 10^23 carbon atoms (Avogadro’s number). If you could count 1 atom per second, how long would it take to count the atoms in 1.00 g of carbon? Express your answer in years.
- yeasts are able to produce high internal concentrations of glycerol to counteract the osmotic pressure of the surrounding media. suppose that a sample of yeast cells were placed in a 4% sodium chloride solution by weight. The density of solution is at 25 C = 1.02 g/ml, Molecular weight of solute = 58.44 g/mol, i of glycerol = 1 R=0.08205 L-atm/mol-K What is the weight of solute (in grams)? What is the moles of solute? What is the volume of the solution (in liters)? What is the molarity of the solution? What is the value of the temperature to be used to solve for the osmotic pressure of the solution? What is the osmotic pressure of solution At the same temperature, what will be the molar concentration of glycerol considering the computed osmotic pressure of the solution and the normal osmotic pressure inside a yeast cell of 7.3 atmospheres?Seawater has a salinity of 3.5%, meaning that if you boil away a kilogram of seawater, when you're finished you'll have 35 g of solids (mostly NaCI) left in the pot. When dissolved, sodium chloride dissociates into separate Na+ and CI-ions. Calculate the osmotic pressure difference between seawater and fresh water. Assume for simplicity that all the dissolved salts in seawater are N aCl.How many moles of KI are in 9.06×10^24 formula units?
- Generally the body eliminates alcohol 0.015 BAC units each hour. How many hours does the driver has to wait to get to the legal limit of 0.08 BAC units?A sample of pure copper has a mass of 16.9 g. Calculate the number of moles in the sample and copper atoms in the sample. (a) moles in the sample moles (b) copper atoms in the sample atomsIf the mole fraction of n-pentane in a liquid mixture is 0.43, and its partial pressure (vapor pressure) above the liquid is 0.24 bars, what is the vapor pressure of pure n-pentane at the same temperature (in bars)? Assume it is an ideal solution. 0.0 0.24 1.79 0.56 0.103 OOOO
- Mercury is the only metal that exists as a liquid (d=13.56 g/cm3) at room temperature. Find the number of moles in 15 mL of mercury.Calculate the number of moles in 169 g of aluminum chloride, AICI 3.Chromium(III) oxide reacts with hydrogen sulfide (H2S) gas to form chromium(III) sulfide and water: Cr2O3(s) + 3H2S(g)→Cr2S3(s) + 3H2O(l) To produce 681 g ofCr2S3 (a) how many moles ofCr2O3are required? (b) how many grams ofCr2O3are required?