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A 10.0 g piece of metal at 100 degrees C is transferred to a calorimeter containing 50.0mL of water initially at 23.0 degrees C. Compute the specific heat capacity of the metal if the heat capacity of the calorimeter, C cal is 25.0 J/K. The final temperature, T final, is 25.6 degrees C
Gold can be hammered into extremely thin sheets called gold leaf. A 210. mg piece of gold (density = 19.32 g/cm3) is hammered into a sheet measuring 4.2 1.0 ft. What is the average thickness of the sheet in meters? GIVEN: 2.54 cm = 1 inch
Explain the characteristics of a single, double, and triple bonds including why they form
Calculate the heat capacity of satan, i. e. Ni . if 30.0g of nickel at 100.0 c raises the temperature of 25.0g of water from 22.0 c to 30.8 c.
What is an anionic sulfide complex. Explain in terms of coordination chemistry, and show reactions of their formation. When do these complexes form. Are these complexes water soluble
12.0 moles of gas are in a 5.00 L tank at 23.9 C. Calculate the difference in pressure between methane and an ideal gas under these conditions.
Depict the general trends in the second ionization energy of an element as a function of its atomic number, over the range Z=1-20. Label the minima as well as maxima on the graph with appropriate element symbol.
What are the normal boiling points of cyclohexane and toluene. Without looking up the actual value, which has a higher vapor pressure
One student measure the pH of the following three solution (weak base, conjugate acid and buffer). Using this data, please calculate the pKa and pKb (show calculation).
Explain what element is the central atom, Define how many bonds does the central atom form, is it polar or non-polar, Define what is the direction of electronegativity
the second-order reaction 2 mnco5 mn2co10 has a rate constant equal to 3.0 x 109 m-1 s-1 at 25degc. if the initial
A 13-g sample of calcium reacts with bromine to form 24g of calcium bromide. How many grams of bromine are used in the reaction?
At 340 K, Kp = 69 for the reaction H2(g) + I2(g) ->2HI(g). 50.0 g of HI is injected into an evacuated 5.00-L rigid cylinder at 340 K. What is the total pressure inside the cylinder when the system comes to equilibrium?
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