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Why is there a differance in the change in enthalpy and the change in internal engery for the zinc/hydrochloric acid reaction but not for the neutralization reactions?
Calculate how much heat is required to added or removed to convert 100.0 g of steam at 115 0C to liquid water at 65 0C?
Calculate the pH of a solution made by mixing 2.0 M HF and 2.0 M HCN. Also calculate the concentration of CN- ion at equilibrium.
Which anions generally do not form precipitates? What are the exceptions?
an optically pure compound was diluted to 400.0 mL with water and placed in a polarimeter tube 15.0 cm long. The measured rotation was -2.87° at 25 °C. Calculate the specific rotation of the compound.
The reaction caused the temperature of the solution to rise from 21.10 °C to 25.46 °C. If the solution has the same density and specific heat as water, what is Î"H for this reaction (per mole of H2O produced)?
There is less waste. II. Harsh reagents are avoided. III. It uses recombinant technology. IV. It needs intense purification.
If 1.4% of the mass of a human body is calcium, how many kilograms of calcium are there in a 173-pound man?
32.5 kJ/mol°GD Muscles are powered by the hydrolysis of Adenosine tri phosphate determine Keq for this reaction
snickers bar holds 1.17 megajoules of energy. How many large calories or Calories are present in a snickers bar?
The Na -glucose symport system of intestinal epithelial cells couples the \"downhill\" transport of two Na ions into the cell to the \"uphill\" transport of glucose, pumping glucose into the cell against its concentration gradient
A 25.0 mL bubble is realeased from a diver's air tank at a pressure of 4.00 atm and a temperature of 11 C. what is the volume of the bubble when it reaches the ocean surface where the pressure is 1.00 atm and the temperature is 18 C?
Why will white phosphorus spontaneously flare up on air and red phosphorus won't? Please explain the connection with chemical structures
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