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What ions will the following elements form? Enter the letter of the item in Column Two that best matches the item in Column One
A. Sodium 2-B. Aluminum 2+C. Calcium 3-D. Sulfur 3+E. Nitrogen 1+
The yield of the reaction to form your chalcone is not quantitative. What side products might be formed from your aldol condensation?
The heat of vaporization for the compound is 27.49 kJ/mol. Calculate the heat required to convert 26.78 g C2Cl3F3 from -59.34 oC to 83.11 oC
How many grams of a stock solution that is 85.5 percent H2SO4 by mass would be needed to make 150 grams of a 45.0 percent by mass solution?
Suppose that you have a 2.0 L sample of hydrogen at 1.00 atm and 59°C. If you heat the sample to 84°C and it expands to a volume of 3.7 L, what will the final pressure be?
Write a chemical equation describing the condensation process for CO2 and a chemical equation describing the freezing process for CO2. For each process discuss the change in enthalpy and entropy that occurs.
if 2000 l of hard water contains 0.022 m ca2+ and 0.0070 m mg2+, how many moles of na+ are needed to replace these ions?
An experiment shows that a 115 -,mL gas sample has a mass of 0.170 g at a pressure of 711 mm; Hg and a temperature of 33Celcius. What is the molar mass?
Important information about Second Order Reaction, The reaction of CH3CH2NO2 + OH- --> H2O + CH3CHNO2 - is a second order and k at 273 K
Determine the enthalpy change for the reaction. 2NO2 (g) -> 2NO(g) + O2(g) These are the given equations: NO + O3 -> NO2 + 02 DeltaH = -198.9 kJ / mol O3 -> (3/2)O2 DeltaH = -142.3 kJ/mol
what the oxidation state P in PO4^-2? what the oxidation state O in PO4^-2?
A solution is made by mixing 506 mL of water and 198 mL ethanol. What is the concentration of ethanol in units of volume/volume percent.
At standard temperature, a gas has a volume of 241 mL. The temperature is then increased to 138C, and the pressure is held constant. What is the new volume?
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