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A student finds a shiny gold-covered rock and decides to determine if it is gold. She first determines that the mass of the rock is 4.7g. She then finds that upon absorption of 57.2J of heat the temperature of the rock rises from 25 degrees C to 57 degrees C. What is the specific heat capacitance of the substance? Assuming your experimental error is +/- 10%, is it gold?
How many liters of ethane, measured at 15.0 degrees Celsius and 719 Torr, must be burned to liberate 2.89 X 10^4 kJ of heat?
What are the electron configurations of the following metal ions: Fe3+, Zr4+ and Co3+. Draw a) the high-spin electron configuration for a complex containing Fe2+ and b) the low- spin electron configuration for a complex containing Fe2+. Assume an ..
at a particular temperature k 4.0 x 10-7 for the reaction n2o4g ---gt 2no2g. in an experiment 1.0 mol n2o4 is placed
what are the concentrations of [NAD+] and [NADH] in the cells? Under oxidative stress condition, the cellular redox potential is shifted to -290 mV. What will be the concentrations of [NAD+] and [NADH] in this cell under this oxidative stress cond..
if 100 ml of 3m hcl is spilled on a lab bench, what is the minimum mass od sodium bicarbonate that must be used to neutralized the acid?
solution of CO in water at 25 degrees celsius in which the CO concentration was 2.0 mM, what pressure of CO would you need to use?
what is minimum grams of acetic acid and of sodium acetate dehydrate that must be used to prepare a buffer with a
Determine the pH of a solution of 10-3 M sodium formate. Formate is a byproduct of microbial metabolism, and can also serve as an energy source for anaerobic bacteria
Consider a solution that contains 81.0% R isomer and 19.0% S isomer. If the observed specific rotation of the mixture is -64.0°, what is the specific rotation of the pure R isomer
Calculate the pH at the equivalence point in titrating 0.110 M solutions of each of the following with 7.0×10-2 M NaOH.
What should be the final volume of a solution containing 50.5g of solid KMnO4 be in order to prepare a 0.745 M solution
Butane (C4H10) is used as a fuel where natural gas is not available. How many grams of butane will fill a 3.50 liter container at 35.6ºC and 758 torr
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