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A coffee cup calorimeter contains 33.70 g of water, at 19.8 degrees celcius. Then 41.44 g of water, with an initial temp of 76.9 degrees celcius, was added to the calorimeter. The final temperature of the water in the calorimeter was 22.9 degrees celcius. what is the heat capacity of the calorimeter?
which of the following is a neutralization reaction? 2no2 --> 2no-> + 02, h2o+so3-->h2so4, hno3 +koh-->h2o+kno3, 4na+o2 --> 2na2o, kcl+nano3--> kno3 + nacl
Type the half-cell reaction that takes place at the cathode for the iron-silver voltaic cell. Indicate physical states using the abbreviation (s), (l), or (g) for solid, liquid, or gas, respectively. Use (aq) for an aqueous solution. Do not forget..
What is the pH during the titration of 25.00mL of 0.10M HAc(aq) using .10M NaOH(aq) as the titrant, after the addition of 10.0, 25.0, and 30.0ml of titrant.
The solution has a vapor pressure of 262 . Pure pentane and hexane have vapor pressures of 425 and 151 , respectively, at room temperature.What is the mole fraction of hexane? (Assume ideal behavior.)
A photon having E = 46.9 keV energy scatters from a free electron inside a metal. What is the maximum energy the electron can gain from the photon
N2+O2->2NO At 2000 degress C, Kc for the reaction is 4.1*10^-4 and delta H= 180.6Kj. What is the value of Kc at 65 degrees C
Express your answer numerically in calories using two significant figures.
what is the mass of a rectangular piece of copper 24.4 cm x 11.4 cm x 6.6 cm? The density of copper is 8.92 g/cm^3.
The molar heat capacity of silver is 25.35 J/Mol * degrees celcius. Knowing how much energy it would take to raise the temperature of 11.7g of silver by 16.9 degrees celcius in joules. Answer the following question: What is the specific heat of si..
Calculate Eo, E, and deltaG for the following cell reactions Mg (s) + Sn2+ (aq) Mg2+(aq) + Sn(s) [Mg2+]= 0.045 M, [Sn2+] = 0.035 M
307g of an unknown mineral is heated to 98.7 C and placed into a calorimeter that contains 72.4 g of water at 23.6C. the heat capacity of the empty calorimeter was 15.7 J/K. the final temperature of the calorimeter is 32.4C. What is the specific h..
What mass of ethanol is present in the vapor? (the vapor pressure of ethanol is 10.0 torr at -2.3 degrees C and 40.0 torr at 19 degrees
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