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(a) Calculate the energy released in the θ (theta) decay of 226Ra.
(b) What fraction of the mass of a single 226Ra is destroyed in the decay? The mass of 222Rn is 222.01757 u.
Determine the density of N2O(g) at a pressure and temperature of 0.7982 atm and 304.5 K, respectively.
Write a balanced chemical equation for thermal decomposition of NiSO4*7H2O, based on observation that compound remained a solid, blue litmus paper moistened in condensation of heated compound/crystals did not change, indicating no acid present
Given that the total number of atoms on our planet remains fairly constant, how is it ever possible to deplete a natural resource such as a metal
If A gas consisting of only Carbon and Hydrogen has an empirical formula of CH2. The gas has a density of 1.65g/L at 27 degrees Celsius and 734 torr. Find out the molar mass and molecular formula of the gas
A 47 kg sample of water absorbs 388 kj of heat. If the water was initially at 27.6 Celcius, what is its final temperature?
A 100.0-g sample of copper is heated from 10.0 degrees Celsius to 100.0 degrees Celsius.Determine the number of calories needed. (The specific heat of copper is 0.0921 cal/g degrees Celsius.)
The equation below shows the final product in the reaction of propan-1-ol with potassium permanganate in acidic solution. Draw the structure of the compound that forms initially in this reactionn.
It takes 46.0 to raise the temperature of an 10.9 piece of unknown metal from 13.0 to 24.7. What is the specific heat for the metal?
Explain when a solution of barium hydroxide is added to a solution of aluminum chloride an insoluble precipitate of aluminum hydroxide is formed. 20.0mL of 0.10 M Ba(OH)2 is added to 10.0 ml of 0.15 M AlCl3 in an experiment.
What is the value of Kc for the decomposi- tion of ammonium carbamate into ammonia and carbon dioxide?
the equilibrium would shift to the right making more products e. the equilibrium would shift to the left making more products
What are the advantages and disadvantages of animal studies and epidemiological studies for establishing dose-response relationships?
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