Calculate the correct mass of H2salen needed (MW = 268.3 g/mol, see molecular structure on page 3) to form a 1:1 complex with CuCl2 using 2 mL of a 0.03 M CuCl2 solution.
Calculate the correct mass of H2salen needed (MW = 268.3 g/mol, see molecular structure on page...
Pre Laboratory Exercise (see instructions p. 4): Include a calculation of the correct mass of H2salen needed (Mw = 268.3 g/mol, see molecular structure on following pages) to form a 1:1 complex with CuCl; using 2 mL of a 0.03 M copper(II) chloride solution.
1.Calculate the mass of malonic acid (C3H4O4, MW 104.07 g/mol) required to prepare 50.00mL of a 0.15 M malonic acid solution. 2. Calculate the mass of manganese sulfate monohydrate (MnSO4*H2O, MW 169.01 g/mol) required to prepare 50.00mL of a 0.020 M manganese sulfate solution 3. Calculate the mass of potassium iodate (KIO3,MW 213.99 g/mol) required to prepare 50.00mL of a 0.20 M potassium iodate solution. 4. Calculate the volume of 1.0 M sulfuric acid (H2SO4) required to prepare 100.00mL of...
Calculate the mass of oestrogen (molecular mass 270 g/mol) required to make 150 mL of a 5.5 mM solution. Select the appropriate units. HINT: First calculate amount (moles) based on the formula amount = c × V (you may have learned this formula as n = c × V; A = C × V) then convert moles to grams using g = mol x molecular mass
a. Calculate the mole fraction (x) of biphenyl (MW 154.21 g/mol) dissolved in naphthalene (MW = 128.17 g/mol) for a 0.250 m solution. Calculate the %mass biphenyl in the solution from part a.
Calculate the mass of each of the following acids that would be needed to prepare 100 mL of o.1 M solution: Potassium hydrogen phthalate (MW = 204 23 g/mol) Sodium phosphate, monobasic (MW = 119.98 g/mol) Mandelic acid (MW =152.15 g/mol) A sample of weak acid was titrated against NaOH. and It required 14.53 mL to be fully neutralized. Calculate the volume of NaOH required to reach 60% neutralization. Another aliquot of the same weak acid solution was combined with...
A 100.0 mL100.0 mL solution containing 0.927 g0.927 g of maleic acid (MW=116.072 g/mol)(MW=116.072 g/mol) is titrated with 0.275 M KOH.0.275 M KOH. Calculate the pH of the solution after the addition of 58.0 mL58.0 mL of the KOHKOH solution. Maleic acid has p?apKa values of 1.92 and 6.27. pH= At this pH, calculate the concentration of each form of maleic acid in the solution at equilibrium. The three forms of maleic acid are abbreviated as H2M,H2M, HM−,HM−, and M2−,M2−,...
A solution of NaCl (MW = 58.5 g/mol) in water (MW = 18.0 g/mol) has the molality of 3.01 molal and the density of 1.112 g/mL. Consider mass of solvent 1 Kg A) What is the mass percent of the solute? (B) What is the molarity of the solution? (C)What is the mole fraction of H2O?
Materials: NaOH MW = 40 g/mL, KHP - potassium hydrogen phthalate, KHC8H404, MW = 204.23 g/mol. Acetic acid, HC2H302, MW = 60.05 g/mol Part 1: Standardization of NaOH Assume 0.951 g of KHP is weighed and transferred to a 250 mL Erlenmeyer flask. Approximately 50 ml water is added to dissolve the KHP. Note that the exact volume of water is not important because you only need to know the exact number of moles of KHP that will react with...
Calculate the mass of EDTA (C10H12CaNNa2Os: MW=374.20 g/mole) needed to prepare a 100- mL of 0.0100M EDTA solution. (Show your work)
How many grams of Na3PO4 (MW = 164 g/mol) are needed to make 282.3 mL of solution that is 0.200 M sodium?