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A 2.73 g sample of a substance suspected of being pure gold is warmed to 72.9 degrees C and submerged into 16.0 g of water initially at 24.6 degrees C. The final temperature of the mixture is 27.0 degrees C. What is the heat capacity of the unknown substance? Express the answer in TWO significant figures.
Draw graphs representing Boyle's law, Charles's law, and Gay-Lussac's law for a fixed amount of gas. Make sure that you label each axis and state the assumptions for each law-that is, the variable(s) that is (are) held constant for each law.
A geological sample is found to have a Pb-206/U-238 mass ratio of 0.337/1.00. Assuming there was no Pb-206 present when the sample was formed, how old is it. The half-life of U-238
How to to use low resolution absorption spectra to obtain values proportional to the true absorbance
Determine the molar solubility of CuCl in a solution containing 0.050 M KCl. Ksp (CuCl) = 1.0 × 10-6. Answer A. 1.0 × 10-12 M B. 5.0 × 10-7 M C. 2.0 × 10-5 M D. 1.0 × 10-3 M E. 0.050 M
Consider the reaction Cu2S + O2 → 2Cu + SO2. If 55.0 grams of Cu2S is heated in excess O2, what is the mass of Cu that can be produced?
Write a balanced equation for the reaction of 2-octanol and surphuric acid. what products are formed?
for the gas phase reaction 2so2g o2g ordm 2so3g observed mole fractions for a certain equilibrium mixture at 1000 k
Research the number of electrons that can fit into energy levels higher than the third level. Why does that explain why there is a space in the lower periods of the periodic table?
Find the heat transferred (in kJ) when 5.55 L of ethylene glycol (d = 1.11 g/mL) in a car radiator cools from 40.0°C to 25.3°C.
honda developed a car that utilize a hydrogen fuel cell to power the car instead of gasoline. the estimated mileage for
Calculate the mass of each microstructure and the mass and composition of each phase within each microstructure. d.) Cool to 726 C. Sketch the morphology. Calculate the mass of each microstructure and the mass and composition of each phase within ..
I need help describing an experiment where one could measure the value of the extinction coefficient of a solution with a concentration (c mol/L) of chlorophyll in water for a given wavelength.
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