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A 1.502 gram sample of a compound of aluminum and sulfur is known to contain exactly 0.540 grams of aluminum. Determine the empirical formula for the substance.
Calculate both the molar and molal concentration of water (H2O) in a solution of pure water when the water is at 10C and 30C. Use an accurate molecular weight for water
In the following reaction, how many grams of NaBr will produce 244 grams of NaNO3? Pb(NO3)2(aq) + 2 NaBr(aq) PbBr2(s) + 2 NaNO3(aq)
Explain the type of nonrenewable energy resource used and their short-term and long-term effects on the environment
A saturated solution of CaF2 had a calcium ion concentration of 2.20 x 10^-4 M. What is the Ksp for CaF2?
Calculate the pH of a buffer formed by mixing 85 ml of 0.12 M lactic acid with 95 ml of 0.15 M sodium lactate.
How much energy (in calories) is needed to heat 8.0 cm3 of fat from room temperature (25 c ) to its melting point (35 c )?
What is the wavelength of a light ray if its frequency is 4.64 x 1014 s-1? answer in units of nanometers (nm).
When solutions of the compound copper (ii) chloride and zinc nitrate are mixed, does the reaction result to form a precipitate, water, gas, or is there no reaction at all.
The pressure and colume are simultaneously increased so that at every instant P and v are related by the equation, P = Av, where A is a constant.
Define Supercritical fliud. Give an example and it's properties. Which fundemental thermodynamic property is important to the solubility
Given the following data table of average bond enthalpies, estimate the ΔH^rxn for the reactions 2H2+O2-- 2H2O. What is the hybridization of xenon in each of your Lewis resonance structures?
similarly, what happens if cellulose is reacted with maleic anhydride C4H2O3? Again, how is the cellulose molecule/structure altered and what are the reaction by-products?
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