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Calculate the final temperature of 245 mL of water initially at 32 °C upon absorption of 17 kJ of heat.
Copper has only two naturally occurring isotopes, Cu-63 and Cu-65. The mass of Cu-63 is 62.9396 amu, and the mass of Cu-65 is 64.9278 amu. Use the atomic mass of copper to determine the relative abundance of each isotope in a naturally occurring sample.
calculate the mass of oxygen in mg dissolved in a 5.00 l bucket of water exposed to a pressure of 1.13 atm of air.
Write out the chemical equation and the equilibrium constant expression based on the concentration.
Determine the empirical formula of each of the following compounds. Type your answer using the format CH4 for CH4 and list the elements in the same order as they are mentioned in the problem.
Carbonic acid (H2CO3) is a diprotic acid withKa1 = 4.2×10-7and Ka2 = 4.8×10-11. Theion product for water is Kw = 1.0 × 10-14.What is the carbonate ion concentration[CO2-3] in a 0.037 M carbonic acid solution?
The compound lead acetate is a strong electrolyte. Write the reaction when lead acetate is put into water: Make sure to include positive or negative and whether or not each one is (s) (l) or (aq)
An experiment requires 15.0 g of cyclohexane, whose density at 25 c is 0.7781 g/ml. what volume of cyclohexane should be used
I know polar protic solvents affect nucleophilicity such that it inceaes down a periodic table column (opposite to normal trend). However do polar protic solvents affect nuclephilicty as you move across a periodic table row. Explain (in depth) rea..
Treatment of 1.385 g of an unknown metal M with an excess of aqueous HCl evolved a gas that was found to have a volume of 382.6 mL at 20.0 degrees C and 755 mmHg pressure
Can an ether molecule be made out of a methanol or ethanol molecule? Why or why not? What is the structure for 1-Octanol & Propane-1,2,3-triol?
How many kJ of heat are needed to completely vaporize 1.30 moles of ? The heat of vaporization for water at the boiling point is 40.6 kJ/mole
the half life of an isotope is 3.15 x 104 years. how many hours will it take for a 4.92 g sample to decay until 1.81 g
Draw the skeletal structure of the product or mixture of products that result from the bromination of the given starting material with less than one equivalent of NBS in the presence of peroxides.
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