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1. A cancer patient needs to increase his ascorbic acid (C686HO) intake to fight cancer cells.
a) How many moles of ascorbic acid does he need to complete the doctor's prescription of 13.00g of intravenous ascorbic acid every day for one month?
b) How many molecules of ascorbic acid does he need everyday to fight the cancer cells?
2. Aspartame (C14H18N2O5) is synthetic table sugar substitute in food and drinks. If a food product needs 0.25 g of C14H18N2O5 to sweeten the Chemitria cupcake, and you ate this food product, how many molecules of aspartame have you eaten?
3. During exercise, lactic acid (C3H6O3) forms in the muscles causing muscle cramps. If 5.0 g of lactic acid (C3H6O3) concentrate in your leg muscles, how many moles of lactic acid (C3H6O3) are causing you pain?
4. Paraffin (C22H46) is a wax used in candle-making. During combustion, a 20.0 g candle produces 1.42 moles of CO2. How many molecules of CO2 are released in the atmosphere after using the candle?
Calculate the mass percent concentration of a solution prepared by dissolving 30 g KI in 170 g water. What is the mass of solute in 100 mL of a 1.00 M solution of H2SO4?
Balance the following ionic Lewis structures by placing the appropriate coefficients. Leave a target blank to indicate the absence of a coefficient
Calculate the pH of a buffer formed by mixing 60. mL of 0.10 M lactic acid with 88 mL of 0.24 M sodium lactate.
suppose you have an electric hot water heater for your house which is an aluminum cylinder which has a 0.56 m radius
What is the freezing point of a solution that contains 28.3g of urea, CO(NH2)2, in 275mL water, H2O. Assume a density of water of 1.00 g/mL.
E85 fuel is a mixture of ethanol and gasoline. What is the mass in kilograms of E85 (d=0.758g/mL) in a 14.0 gallon tank.
Is 373 K a high temperature? Some thermodynamic principles only hold at "high temperature". How is "high temperature" defined
If you have 500 ml of .15M Formic Acid, what is the pH of this solution? What is the pKa?
The only materials on hand are 300 mL of white vinegar (5.00% by mass acetic acid, density = 1.006g/mL) and potassium acetate. How should the student proceed?
Friction causes a torque of 25Nm. What is the minimum magnitude force needed for the adult to make the door rotate?
The boiling point of water is 100.0 degrees C at 1 atm. How many grams of calcium chloride(111.0 g/mol CaCl2), must be dissolved in 231.0 grams of water to raise the boiling point by .350 C. Kbp(water) = 0.512 C/m
In an electron microscope the electrons generate the image. For one of the scanning electron microscopes in our Central Analytical Facility, the electrons are accelerated to have a kinetic energy of 200,000 eV.
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