Question
# 6.41, 6.43, 6.45, 6.49, 6.51, 6.52, 6.53
A teardrop with a volume of 0.5 mL contains 5.0 mg NaCl. What is the molarity of the NaCl in the teardrop? The concentration of stomach acid, HC1, is approximately 0.10 M. What volume of stomach acid contains 0.25 mg of HC1? The label on a sparkling cider says it contains 22.0 g glucose (C6H12O6), 190. mg K+, and 4.00 mg Na+ per serving of 240. mL of cider. Calculate the molarities of these ingredients in the sparkling cider. If 3.18 g BaCl2 is dissolved in enough solvent to make 500.0 mL of solution, what is the molarity of this solution? The label on a jar of jam says it contains 13 g of sucrose, C12H22O11 per tablespoon (15 mL). What is the molarity of sucrose in the jam? A particular toothpaste contains 0.17 g NaF in 75 mL toothpaste. What are the percent w/v and the molarity of NaF in the toothpaste? A student has a bottle labeled 0.750% albumin solution. The bottle contains exactly 5.00 mL. How much water must the student add to make the concentration of albumin become 0.125%? How many grams of solute are present in each of the following aqueous solutions? 575 mL of a 2.00 M solution of nitric acid, HNO3 1.65 L of a 0.286 M solution of alanine, C3H7NO2 320 mL of a 0.0081 M solution of calcium sulfate, CaSO4 A student has a stock solution of 30.0% w/v H2O2 (hydrogen peroxide). Describe how the student should prepare 250 mL of a 0.25% w/v H2O2 solution. To make 5.0 L of a fruit punch that contains 10% v/v ethanol, how much 95% v/v ethanol must be mixed with how much fruit juice? A pill weighing 325 mg contains the following. What is the concentration of each in ppm? 12.5 mg Captopril, a medication for high blood pressure 22 mg Mg2 + 0.27 mg Ca2+ One slice of enriched bread weighing 80 g contains 70 mu g of folic acid. What is the concentration of folic acid in ppm and ppb? Dioxin is considered to be poisonous in concentrations above 2 ppb. If a lake containing 1 times 107 L has
Explanation / Answer
6.41 5xE-3/58.5=8.547E-5 moles =8.547xE-5/0.5E-3 =0.171 M please rate the other answers i will be answering in a short while
