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An alloy is 80% by volume iron. The rest is aluminum. Aluminum has a density of 2.70 g/cm³, and iron's is 7.87 g/cm³. A block of alloy measures 2.0 ft. wide and 3.0 ft. long, if the block contains 25.8 pounds of aluminum, how thick is the block?
Which salt would you expect to dissolve readily in acidic solution. calcium phosphate, Ca3(PO4)2 calcium sulfate, CaSO4 Calculate K for the reaction of H3O+ with the PO43- anion. Calculate K for the reaction of H3O+ with the SO42- anion.
A solution is made by mixing exactly 500 mL of 0.180 M NaOH with exactly 500 mL of 0.100 M CH3COOH. Calculate the equilibrium concentration of the species
what volume should you dilute 43.5mL of a 4.00M KI solution so that 24.0mL of the diluted solution contains
What is the pressure of a 10g sample of sulfur trioxide in atmospheres at a temperature of 20 degrees Celsius that has a volume of 50L
for the reaction 2nog2h2g--gt2h2og at equilibrium in a 4.0l container at 25oc. suppose 2.5 mol of each component
What is the molality of sucrose in this mixture. What is the mole fraction of sucrose in this mixture
Hydrocyanic acid (HCN) is a weak acid with Ka = 4.9 x 10-10. The pH of a solution that contains equal numbers of moles of HCN and KCN is closest to
Calculate the amount of energy in kilojoules needed to change 135 of water ice at -10 degrees Celsius to steam at 125 degrees Celsius.
An electrolyte or a nonelectrolyte
Calculate the molar solubility of calcium hydroxide in a solution buffered at each of the following pH's.
Using the method of successive approximations, what is [H3O+] in 0.500 M (Ka= 1.1*10^-2) and how many iterations (n) are needed to validate that a constant value had been obtained
The standard entropy of Pb(s) at 298.15k is 64.80 jk-1 mol-1. assume that the heat capacity of Pb(s) is given by Cp,m (Pb,l)/jk-1mol-1 = 32.51 -.00301 t/k. calculate the standard entropy of Pb (l) at 650 C. calculate delta H for the transformation..
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