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1) What is the strongest metal?
2) The strongest alloy?
3) Which salt has the highest vaporization point?
4) Which covalent molecule has the highest vaporization point?
5) What is the most polar molecule? (It is not HF, Hydrofluoric acid.)
Calcium oxide reacts with water in a combination reaction to produce calcium hydroxide: A 5.50-g sample of \rm CaO is reacted with 5.31 g of H_2O. How many grams of water remains after completion of reaction
Calculate the cell potential at 298 K of the galvanic cell below. Assume no current draw and a perfect salt bridge. Pt(s)| Cu2+ (0.05 M), Cu+ (0.50) || Fe2+ (0.01 M), Fe3+ (0.10 M) | Pt(s)
The change in heat for the solution proecss when solid sodium hydroxide dissolves in water is 44.4 kj/mol. when a 13.9 g sample of naoh dissolves in 250.0 g of water in a coffee cup calorimeter, the temperature increases from 23.0 degrees C to how..
Determine the pH of (a) a 0.20 M NH3 solution, (b) a solution that is 0.20 M in NH3 and 0.30 M NH4Cl
Then you precipitate the calcium ion in solution by adding sodium oxalate Na2C2O4. The precipitate is calcium oxalate, CaC2O4. You find that a sample of limestone weighing 128.3 mg gives 140.2 mg of CaC2O4. What is the mass % of calcium in the lim..
Question- A 1.50L buffer solution is .250 M in HF and .250M in NaF. Calculate the pH of the solution after the addition of .0500 moles of solid NaOH. Assume no volume change upon addition of base. The Ka for HF is 3.5 x 10^-4.
A 20 degrees Celsius, the solubility of potassium nitrate is 30g in 100g of water. A 35 gram solution of potassium nitrate in water was determined to contain 10 grams of KNO3.
At 2000°C the equilibrium constant for the reaction is Kc = 2.4 103. 2 NO(g) N2(g) + O2(g) If the initial concentration of NO is 0.100 M, what are the equilibrium concentrations of NO, N2, and O2? A) [O2] _ M B) [N2] _ M C) [NO] _ M
What are the degeneracy of the first six levels for an electron in a cubicul (3-dimensional) box with box length, L = L(x) = L(y) = L(z) = 1.00pm
Determine the volumes of 0.25M NaH2PO4 and 0.25M Na2HPO4 that need to be mixed together to produce 800mL of a buffer at pH 7.5. The SECOND pKa of H3PO4 is 7.2.
The molecular mass of 12C carbon-12 is exactly 12 g/mole. The molecular mass of 16O (oxygen-16) is 15.995 g/mole. Compute the reduced mass of 12C16O molecule.
From the reaction of 0.1000 g of solid granular tin with 0.1000 g of solid iodine in 3.0 mL of solvent methylcyclohexane (density = 0.770 g/mL) was isolated 0.0740 g of an iodide of tin as the sole product of the reaction.
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