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A mixture of 0.146 moles of C is reacted with 0.117 moles of O2 in a sealed, 10.0L vessel at 500 K, producing a mixture of CO and CO2. The total pressure is 0.640 atm. What is the partial pressure of CO?
If 95 0C of heat are added to a pure gold coin with a mass of 20 gm, what is its temperature change? Specific heat capacity of gold is 0.128 .
22.5ml of .383 molar H2SO4 is required to completely neutralize 20ml of KOH solution. What is the molarity of the KOH solution?
What is the mole fraction of ethanol in a solution made by dissolving 14.6 g of ethanol in 53.6 g of water?
At the equivalence point of the titration of formic acid by NaOH, the pH of the solution is around 8 - 10. What would be a good indicator
lead nitrate is needed to precipitate all of the chloride ion in a 10.00-mL sample of an unknown. What is the molarity of the chloride ion in the student's unknown?
When an ionic solid is added into a solvent, you can see that the ionic solid dissociates into its respective cations and anions. The solvent molecules immediately cluster around the ions.
In photography, unexposed silver bromide is removed from film by soaking the film in a solution of sodium thiosulfate, Na2S2O3. Silver ion forms a soluble complex with thiosulfate ion
The equilibrium concentration of I2 is 0.05M. What is the equilibrium constant Kc for the reaction at this temperture? Express answer in K
Nitrogen reacts with a metal to form a compound in which there are three atoms of the metal for each atom of nitrogen. If 1.486 g of the metal reacts with 1.000 g of nitrogen
When sodium reacts with water, 255 mL of hydrogen gas forms along with sodium hydroxide. What mass of sodium is needed for this reaction?
The solubility of a gas in water is 0.22 g/L at 20 kPa of pressure. What is the solubility when the pressure is increased to 115 kPa
what is the molar mass of the unknown liquid in g/mole?
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