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How many grams of ethylene glycol C2H6O2 must be added to 1.15kg of water to produce a solution that freezes at -3.68 degrees celsius?
Celsius and heated to the temperature of 275 degree Celsius at a constant pressure of 0.975 atm. compute the work done?
Calculating Delta H, Use some or all of the following reaction enthalpies to calculate delta H for the reaction:
What weight of sulfuric acid will be needed to react completely 35.5g of ammonia in the production of ammonium sulfate.
A material is found to have a tenth-thickness of 2.3 cm for 1.25-MeV gamma rays. a) what is the linear attenuation coefficient for this material? b) What is the half thickness? c) what is the mean-free-path length for 1.25-MeV photons in this mate..
The objective is to implement a menu-based system for Bank Accounts in order to simulate a very simple banking system. Many structures have to be declared to manage bank accounts.
A swimming pool contains 88,000 liters of water and it having a surface area of 5 meters by 10 meters. It is observed that when this swimming pool is heated by the Sun for six hours.
A buffer is made by dissolving H3PO4 and NaH2PO4 in water. Write and equation that shows how this buffer neutralizes added bases.
When C2H5OH +3O2 produces 2CO2 + 3H2O,determine how many grams of oxygen gas are essential for complete combustion of 421grams of ethanol ?
what are the pH and the change in pH after the addition of 0.054 mol hydrochloric acid to the buffer solution?
To find the pKa of X-281, you prepare a 0.075 M test solution of X-281. The pH of the solution is determined to be 3.00. What is the of X-281.
If 76.0 mL of .150 M HCL is needed to neutralize all the NH3 from a 2.25-g sample of organic material, calculate the mass percentage of nitrogen in the sample.
Consider the following reaction: NH4HS(s) NH3(g) + H2S(g) An equilibrium mixture of this reaction at a certain temperature was found to have [NH3]=.278M and [H2S]=.355M.
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