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A g of a metal alloy is heated to c in boiling water the alloy is placed in

 
 

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1.A 0.2 L of a solution was prepared by mixing 3.2 g of sodium phosphate and 2.85 g of potassium ...

gen phosphate. After the solution came to equilibrium, 1.2 L of 0.003 mol/L solutions of HCL was added. How will the addition affect the major ions species present from the original solution?
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2.Above you will find a graph of a monoprotic weak acid titration. In this titration a 0.5053 g sample ...

e of a weak acid in 32.9 mL of water is titrated with 0.0755 M Ca(OH)2. Calculate the molarity of the weak acid being utilized in the titration above. (do not provide units and follow significant figure rules).
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3.Yorksinite is a newly discovered gaseous compound. 2.178 mol of Yorksinite effuses from a container in 98.70 s. Under ...

in 98.70 s. Under the same conditions, 1.738 mol of another gas with molar mass 40.10 g mol-1 takes 82.60 s to effuse. What is the molar mass of yorksinite? Report your answer to one decimal place. Do not enter units.
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4.Sodium oxalate, Na2C2O4, has a solubility in water of 6.25 g/100 mL. When sodium oxalate dissolves in water and dissociates, C2O4 2- ...

in water and dissociates, C2O4 2- is a polyatomic ion. a. Calculate the molar solubility of sodium oxalate. b. Calculate the Ksp for sodium oxalate. c. Calculate the total ion concentration for a solution where 1.33 g of sodium oxalate is added to 20.0 mL of water.
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5.A 23.05 g of a metal alloy is heated to 100.°C in boiling water. The alloy is placed in 50.00 ...

water at 20.0°C. The temperature of the water increases to 29.5°C. Determine the specific heat capacity of the alloy.
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7.a) Carbon tetrachloride is an organic compound with the chemical formula CCl4. It is a colorless liquid with a “sweet” smell. i. ...

quid with a “sweet” smell. i. Using the ground state electron configuration and excited state electron configuration explain the hybridization of the central Carbon (C) atom. (7 Marks) ii. Identify the orbitals that overlap to form the C-Cl bond. Draw a diagram to show the orbital overlap. (3 Marks) iii. What is the bond angle of CCl4? (1 Mark) b) Consider a Fluorine atom (F) and a Fluorine anion (F-). Which of these two species would you expect to have a larger radius? Explain your answer. (5 Marks) c) Explain why the first ionization energy of Aluminum (Al) is less than that of Magnesium (Mg). (4 Marks) d) Assume the atom Oxygen(O) can form both cationic(O+) and anionic(O-) species. Place the following species in order of increasing first ionization energy, starting with the lowest. O+, O, O- (5 Marks) 4. a) Sea water contains roughly 28.0 g of NaCl per liter. (NaCl molar mass = 58.44 gmol-1). i. Calculate the number of moles of NaCl in a liter of sea water. (2 Marks) ii. Calculate the molarity of NaCl in sea water. (4 Marks) iii. Calculate the mass by volume percent (W/V) of NaCl in sea water. (4 Marks) Lowest first ionization energy ………………… ….. Intermediate ionization energy ………………… ….. Highest first ionization energy …………………
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1.AU MAT 120 Systems of Linear Equations and Inequalities Discussion

mathematicsalgebra Physics