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What's the molarity of a solution containing 55.8 g Cu(OH)2 (Molar mass = 97.56 g/mol) in...
How many Na atoms are in 22.25 grams of Na3PO4? (The molar mass is 163.94 g/mol.) HTML Editore BIV AA- IX EI 3XXE v STT 12pt Paragraph 0 words
Calculate molarity of 10.00 g/L solution of the salt, if its molar mass is 100.0 g/mol and solution density D=1.100 g/mL.
A 49.5 ml solution containing 3.03 g of Na2CO3 (molar mass = 106 g/mol) and 50.5 ml solution containing excess Al(NO3)3 (molar mass = 213 g/mol) are mixed. What is the molecular formula of the insoluble product and how much of that product is formed? Al2(CO3)3; 2.23 g formed AICO; 1133 g formed Al2(CO3)3: 6.38 g formed Nag(NO3)63.03 g formed NaNO3;2.23 g formed NaNO3: 6.38 g formed
A solution containing 2.610 g of CuSO_4.5H_2O (molar mass 249.7 g mol^-1) is completely reacted with excess Zn metal in a constant pressure calorimeter, according to: Cu^2 + + Zn rightarrow Cu + Zn^2 + (a) Determine delta H for the reaction as written above if a temperature change of 4.319 K is measured in the reaction mixture. Assume that the combined heat capacity of the calorimeter and solution is 526.37 J K^-1. (b) Is the enthalpy change determined in...
A caretenoid pigment with a molar mass of 548 g/mol has Ɛ = 15,500 L/mol-cm at λ = 600 nm. A sample of this pigment is first dissolved in 30 mL of hexane and then diluted to a total volume of 250.0 mL. A 10 mL aliquot is removed and diluted to 500 mL. This final dilution has A = 0.489 when measured at λ = 600 nm in a cell path length = 2.00 cm. Calculate the mass of...
Calculate the % (mass/volume) of a 250.mL aqueous solution, containing 24.0 g of Ba(OH)2.
Concentrated hydrochloric acid (HCl) (molecular mass 36.5 g/mol) has a molarity of 3.6M. What volume of concentrated HCl would you need to add to prepare a 20% (w/v) solution of HCl with a final volume of 500 mL, I have calcualted that 3.6mol/L x 36.5g/mol =131.40g/L. Then to get the 100ml value and percentage: 131.40/1000 x 100 =13.14g/100ml therefore 13.14%. 20% of this would be 2.628g. Is this the answer?
A. What is the mass of barium hydroxide (171.35 g/mol) dissolved in 0.542 L of 0.107 M Ba(OH)2 solution? B. What is the molarity of aqueous lithium bromide if 24.60 mL of LiBr reacts with 12.77 mL of 0.2491 M Pb(NO3)2? Pb(NO3)2(aq) + 2 LIBr(aq) → PbBr2(s) + 2 LINO3(aq)
3.) Quinine (C,H,N,0) (Molar Mass = 324.42 g/mol) is an anti-malaria drug. An aqueous solution was mixed containing 88.8 mg (milligrams) of quinine and 1.5 liters of H.O. (assume a total volume of 1.5 L of the solution) (Density of H,0 = 1.01 g/mL) Given this data calculate the following: (Show ALL Work) a.) Mole Fraction of Quinine in Water: (5 pts) b.) The molality of quinine: (again 1.5 L of solution / solvent) (5 pts) c.) ppm of quinine:...
ASAP 1) Determine the molarity of a solution fomed by dissolving 97.7 g LiBr in enough e the molarity of a solution formed by dissolving 97.7 g LiBr in enough water to yield 750.0 mL of solution. E) 1.18 M C) 0.768 NM aker contains 0.50 mol of potassium bromide in 600 ml. of water. An additional 600 mI, of C) 0.42 mol A) 0.130 NM B) 2.30 M D) 150 M 2) A beaker contains 0.50 mol of potassium...