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What is the enthalpy change for each of the following reactions? 1. Ag+ (aq) + Li(s) -->Ag(s) +Li+(aq) 2. Fe(s) + 2Na+(aq) --> Fe2+(aq) + 2Na(s) 3. 2K(s) + 2H2O(l) --> 2KOH(aq) + H2(g)
If the standard silver half-reaction potential is set to .80V, calculate the potential for the zinc half-reaction. Write the net ionic equation for the reaction that occurs in this voltaic cell.
What is the SUM of all of the coefficients in the reaction. 2 C8H18 + 25 O2= 16 CO2 + 18 H2O
A student placed 13.0 g of glucose C6YH12O6 in a volumetric flask, added enough water to dissolve the glucose by swirling, then carefully added additional water
Assuming the heat absorbed by the styrofoam is neglibible, calculate the expected final temperature. The specific heat of water is 4.184 J g-1 C-1.
Write the chemical equation for the formation of HBr from H and Br atoms. Lone pairs do not need to be included. Using the table of bond energies determine the ?H for the above reaction. (KJ/Mol)
Which one of the following is the correct formula resulting from a combination of the common ions from these elements: Li and S
What is the concentration of unknown acid solution? Write the neutralization reaction, balance it, name the products THEN Solve the problem above.
A vapor composed of 0.45 mole fraction ethanol and 0.55 mole fraction acetic acid at 120.0 mmHg (absolute), is in equilibrium with a liquid phase also composed of ethanol and acetic acid.
Calculate the cell potential (emf) for a galvanic cell at 298 K composed of a standard aluminum electrode (Al metal and Al 3+ ions at 1.0 M) and a standard cadmium electrode (Cd metal and Cd 2+ ions at 1.0 M.)
What type of forces must be overcome when solid I2 is dissolved in dissolves in methanol, CH3OH? What type of forces must be disrupted between methanol molecules when I2 is dissolved?
If 3.0 L of oxygen gas at 177°C is cooled at constant pressure until the volume becomes 1.50 L, then what is the final temperature
determine the evaporator temperature at which a single-stage R22 plant will cease to produce any refrigerating effect in delhi where the condenser temperature is 42 degree C
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