The Hbr solution utilzed is 48% HBr by weight. The density is 1.49 g/mol. The volume used is 2.1 ml. Determine the moles of HBr used
The Hbr solution utilzed is 48% HBr by weight. The density is 1.49 g/mol. The volume...
How many moles of benzaldehyde (density d = 1.04 g/ml), (molecular weight mw = 106.12 g/mol) are required to react with 1.0 ml of acetone: (density d = 0.79 g/ml), (molecular weight mw = 58.08 g/mol)? 6. What is approximate theoretical yield for problem # 5 if you obtained 2.1 grams of dibenzylidene acetone (mw = 234.29 g/mol)?
Part 1 of 4 - Question 1 of 4 0.5 Points Using 48% HBr (80.908 g/mol, 1.49 g/mL) and 1-butanol (74.12 g/mol, 0.810 g/mL), 4.6 mL of hydrobromic acid is reacted with 3 mL of 1-butanol. Calculate the theoretical yield of 1-bromobutane in grams based on the limiting reagent. Report the mass to 2 decimal places.
2. Given 3.98 mL of sulfuric acid (98.0%) calculate the number of mmols in the solution. (MW H2SO4: 98.08 g/mol, density: 1.840 g/mL) 3. Given 7.04 g of HBr calculate the volume (mL) of a 48.0% solution. (MW HBr: 80.91 g/mol, density: 1.49 g/mL)
density of a solution is 1.41 g/mL. If we have 27.5 grams of this solution, calculate its volume. Show all work. 13 out of every 180 students wear alasses, calculate the percent of students who wear glasses. Show all work. Calculate the percent uncertainty in measuring out 8.50 ml with a 10 mL pipe. Show all work. ONUS: (2 points if turned in on time): An aqueous solution of hydrobromic acid, HBr,r has a density of 1.50 g/mL and is...
calculate the weight of bicine (167.19 g/mol) buffer to prepare a 150mM solution with total volume of 100 mL
4. What volume of a 36% by weight hydrochloric acid solution whose density = 1.18 g/mL is needed to produce 11.0 L of a solution that has a pH of 2.12?
Dichloroethane CH.CI (Given: density - 1.25 g/mL) Molecular Weight Volume of Sample (read meniscus) = 22.0 mL Mass of Sample (use given density and volume) = Moles in Sample = Molecules = Total Atoms =
7.28 Initial Volume of NaCl solution in cylinder, (mL) Volume of NaCl solution remaining in cylinder, (mL) Volume of NaCl solution transferred to dish, (mL) Mass of dish, (g) Mass of dish and NaCl solution, (g) Mass of NaCl solution, (g) Mass of dish and dried Naci, (g) Mass of dried NaCl, (g) Density of solution, (g/mL) Percent NaCl (m/m), (%) Percent NaCl (m/v), (%) Molarity of NaCl, (moles/L) 1.78 5.50 79.25 85.75 6.50 80.95 1.70 1.18 262 309 Molarity....
Buffer A Buffer B Mass of NaC2H3O2 used to prepare buffer (g) .149 1.49 Volume of buffer prepared (mL) 100.0 100.0 Molar concentration of HC2H3O2 in buffer (M) 0.1 1.0 Initial pH of buffer 4.0 4.0 Volume of 0.5 M NaOH to raise pH by 2 units (mL) 2 5 Volume of 0.5 M HCl to lower pH by 2 units (mL) 3 7 Volume of 0.5 M NaOH at equivalence point (mL) 4.5 10 Buffer capacity has a rather...
Vinegar is sold as % acidity which means a weight/volume or w/v% calculation. The density of acetic acid is 1.05 g/ml and water is (effectively) 1.0 g/ml. Recollect (from CHMY121) the %w/v refers to a solution with a certain mass of additive made up to 100 mL with the addition of (in this case) water; or % m/v= (grams of solute / 100 mL solution) ×100 The molar mass of Acetic Acid is 60.052 g/mol. What is the molarity of...