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Calculate how many mL of 0.100 M NaOH are needed to neutralize completely 49.0 mL of 0.0800 M H2SO4 (forming Na2SO4 and water).
"disappeared" from a rock face that is adjacent to a lake (original pH=6.7) with dimensions 100 m x 40 m x 10 m. You think that the "disappearance" is due to leaching of the pyrite into the lake. To
It is estimated that about 0.02 m3 of pyrite (density 5 g/cm3) has "disappeared" from a rock face that is adjacent to a lake (original pH=6.7) with dimensions 100 m x 40 m x 10 m.
How many kilocalories are required to produce 1.39 mol of aluminum? 2Al2O3 yields 4Al+3O2; (delta) H = +801(kcal/mol (+3350 kJ/mol )
Nitrogen and hydrogen combine to form ammonia in the Haber process. Calculate (in kJ) the standard enthalpy change ?Hº for the reaction written below, using the bond energies given.
Calculate the the concentration of C4H9NO in a 1.50×10^?2 M morpholine solution. Given: pH= 10.25 and pKb= 5.68
You wash dishes for a chemistry laboratory to make extra money for laundry. You earn 6 , and each shift lasts 75 . Your laundry requires 6 . How many shifts must you work if you wish to wash 10 of l
Reaction would go to the left, making more "products" 2. Reaction would go to the right, making more "products" 3. No change on the equilibrium position
Write a balanced chemical equation when Magnesium metal burns in oxygen to form magnesium oxide, MgO
When one mole of each of the following liquids is burned, which will produce the most heat energy. a. C5H12 b. C6H14 c. C6H10O d. C6H12O e. C6H14O
For lab this week i need to separate a mixture of caffeine and Phenacetin using Acid-BAse Extraction. What reagent should i use for the separation of components by extraction of the dichloro methane
Analysis of an unknown substance showed that it has a moderate melting point and is a good conductor of heat and electricity in the solid phase. Which of the following substance would have those ch
The Kb value for Hydrazine is 1.3x10^-6. What is the pH of the solution before any HCl has been added
Calculate (in kJ) the standard enthalpy change ?Hº for the reaction written below, using the bond energies given
what is reduced and what is oxidized in this chemical equation: Zn+2HCl yields ZnCl2+H2
Calculate the volume of oxygen you would need at 1.00 atm and 298 K to completely oxidize 53g of glucose.
How many moles of NiCl can be formed in the reaction of 5.00 mol of Ni and 10.0 mol of HCl
What is delta S if 3.00 moles Pb is cooled from 200 °C to 25 °C {J/K}? (B)What is the molar S° (473 K) if the value at 25 °C is 26.44 J•mol -1 •K -1
Find H+ and the pH of the following solutions a) .30M HBr b) a solution made by diluting 10.0 mL of 6.00 M HCl to .300 L with water
Calculate the difference in molar entropy (a) between ice and liquid water at 5.00 °C, and (b) between liquid water and its vapor at 90.0 °C and 1.00 atm. The differences in molar heat capac
Calculate the heat of solution for sodium acetate when 35.0mL of water is in a calorimter and 1.5461g of sodium acetate is added. The initial temperature is 23.0 C and the final temperature is 24.8
How many moles of NaCl2 can be formed in the reaction of 5.00 molof Ni and 10.0 mol of HCl
The water temperature rose from 20.00°C to 23.55°C. If the calorimeter (excluding the water) had a heat capacity of 403 J/K, what was the heat of combustion (qV) per gram of the fuel? a. 25.