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A 74.0-gram piece of metal at 94.0 °C is placed in 120.0 g of water in a calorimeter at 26.5 °C. The final temperature in the calorimeter is 32.0 °C. Determine the specific heat of the metal. Show your work by listing various steps, and explain how the law of conservation of energy applies to this situation.
A human piece of pottery is dated 16750 years old by using carbon-14. how many half lives have passed since the pottery was made?
What is the mass of 1 mole of copper atoms? Round your answer to 3 significant digits.
What pair of elements would you expect to exhibit the greatest similarity in physical and chemical properties? WHY?
What is the ratio of the average kinetic energy of a SO2 molecule to that of an O2 molecule in a mixture of two gases?
Use Coulomb's law to calculate the ionization energy in kJ/mol of an atom composed of a proton and an electron separated by 203.00 pm
Problem- Describe the difference between the IR spectrum of your ketone product (camphor), and that of the alcohol starting material (Isoborneol). How can these spectra help you determine whether the reaction worked
What is the van't Hoff factor, i, for the solution. How would the value of i change as the solution becomes more concentrated. Explain.
The heat of fusion of water is 6.01 kJ/mol and the molar heat capacity is 36.6 J/(oK.mol) for ice and 75.3 J/(oK.mol) for liquid water.
How much heat, in calories, does it take to warm 540 grams of water from 11.0 degrees Celsius to 37.0 degrees Celsius
Question- The salt ammonium nitrate can follow three modes of decomposition: (a) to HNO3(g) and NH3(g), (b) to N2O(g) and H2O(g), (c) to N2(g), O2(g) and H2O(g). Calculate Gibbs rxn for each mode of decomposition at 298 K. I have A) 94.0 kJ B)-169..
Question- Write a balanced chemical equation which corresponds to the following equilibrium constant expression.
Use a molar mass of 800g/mol for the vegetable oil and use a density of 0.88g/mL for vegetable oil and 0.79 g/mL for methanol to calculate how many moles of ethanol are used.
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