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Assign an oxidation state to each element in each compound. Express all answers as a signed integer. 1. Na3PO4 2. Hg2S 3. Fe(CN)3 4. NH4Cl
Calculate how much energy in the form of heat is available from 100mL of this mixture and compare it with the amount available from pure gasoline
Important information about Liquid Crystals, Are there differences between the cholesteryl benzoates and the cholesteryl esters having long carbon chains?
The complete combustion of propane, C3H8(g), is represented by the equation: C3H8(g) + 5 O2(g) ? 3 CO2(g) + 4 H2O(l) ?H° = -2220 kJ How much heat is evolved in the complete combustion of 12.5 L C3H8 (g) at 25°C and 790 mmHg
A chemist calculated the theoretical yield of a product to be 26.8 g. The percent yield was 92.2%. How many g of product were actually obtained
The enthalpy of formation of ethanol, C2H5OH, is -277.o kJ/mol at 298.15K. Calculate the enthalpy of combustion of one mole of ethanol, assuming that the products are CO2 and H2O
What is the pH of a 0.430 M ammonia solution. What is the percent ionization of ammonia at this concentration
alloy sample was analyzed for its copper content iodometrically. The alloy was dissolved in hot, concentrated nitric acid and prepared for analysis
A 100ml sample of sodium bromide containde co104.62g of sodium bromide. upon evaporation, 6.280g of reside was obtained. frome this data calculate each of the folowing for the solution
When electricity (the flow of electrons) is passed through a solution, it causes an oxidation-reduction (redox) reaction to occur. If the solution contains a metal cation such as Ag
Select the strongest interparticle force(s) present in Mg3N2.
A low melting metallic element has a vapor pressure of 28.2 torr at 458. oC. and a vapor pressure of 420. torr at 710. oC. What is the enthalpy of vaporization of this metal in kJ/mol?
Which is predicted to be the most ionic substance? a) NiS b) CuI c) CoO d) NaBr
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