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In oxygen cylinder there is helium also filled with oxygen. Why not nitrogen is filled in place of helium?
how many no. of hydrogen ions are present in 10 millionth part of 1.33 cc of pure water at 25 degree celsius.
Determine if a precipitate forms when the following solutions are mixed. Write the overall equation, the total ionic equation, and the net ionic equation. PbNO3(aq) + 2KI (aq)
when silver metal reacts with bromine at 298 k a spntaneous redox reaction takes place. calculate e initial andnbsp
Can someone explain why Nuclear Fission and Nuclear Fusion processes produce large amounts of energy. The processes are clearly opposite but my understanding of the energy part is lost.
To an open beaker containing 500ml of water at 298k, 20g of sodium metal is added. the reaction proceeds quite rigorously but ultimately comes to rest after consuming all of the sodium metal and thermally reequilibrating with the surroundings. The..
Which of the following molecular geometries could lead to linear molecule after removal of one atom?
Determine the amount of energy involved in calories given off when 85 grams of H2O cools from 45 degrees Celsius to 25 degrees Celsius?
The gas stream from a chemical reactor contains 25 mol % ammonia and the rest inert gases. the total flow is 181.4 kg mol/h to an absorption tower at 33 K 1.013*10^5 pa pressure, where water containing 0.005 mol frac ammonia is the scrubbing liqui..
A 0.5000-g sample containing NaHCO3, Na2CO3, and H2O was dissolved and diluted to 250.0 mL. A 25.00-mL aliquot was then boiled with 50.00 mL of 0.01255 M HCl. After cooling, the excess acid in the solution required 2.34 mL of 0.01063 M NaOH when t..
Question- The experiment deals with calorimetry. If the warm water in this experiment is at 98 degrees celsius. how much heat must be releases in order for the temp of 100mL of water to decrease to 32 degrees celsius? the specific heat of water is..
Problem- Construct a simulated 1H NMR spectrum for 2-chloropropane by dragging and dropping the appropriate splitting patterns into the boxes on the chemical shift baseline, and by dragging integration values into the small box above each signal.
an unknown mass of each of the given substances as with the final temperature is recorded as indicated 1.pyrex glass
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