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look at the equation (v=k*t ). what would be the volume of an ideal gas at absolute zero? what happens to real gases before they reach absolute zero?
The atmospheric pressure in La Grande (683 atmospheric pressure) is significantly lower than that of Portland
You start with 100.0 mL of a 0.2500 M solution of NaCl sitting in a beaker. After several days you test the solution and find that it is now 0.3125 M. How much water must have evaporated?
replacement compounds for the Freons have gone into production: HFC-134a (chemical formula: CH 2 FCF 3 ) and HCFC-124 (formula:CHClFCF 3 ) In 1991. Determine the molar masses of these two compounds
For each of the following, calculate the concentration of Tris, Tris-H+ and the pH of the solution in each of the following solutions.
The volume of oxygen collected over water is 226 mL at 25°C and 503.0 torr. Calculate the dry volume in milliliters of oxygen at STP.
What is the identity of the metal if 0.280 grams of the metal is plated out in the electrolysis? Show all calculations.
what is the volume percent of a solution prepared by dissolving 43 g of NaOH in enough water to make a final volume of 120 ml.
Identify the two important classes of catalysts. Analyze the chemical reactions that take place when a biological catalyst combines with a reactant (substrate) to form an unstable intermediate.
It takes 54.0 J to raise the temperature of an 10.3g piece of unknown metal from 13.0C to 25.0 C. What is the specific heat for the metal?
Caffeine has a distrubution coefficient of 8.4 for methylene chloride/ water. How much caffiene will be extracted from a 200 mL cup of Turkish coffee (250 mg caffeiene) by 100 mL of methylene chloride?
find the vapor pressure of a water solution in which the mole fraction HgCI2 (a nonvolatile solute) is 0.163 at 25.
When an outside plastic envelope is removed, O2 molecules penetrate the paper causing the reaction to begin. A Typical packet contains 250 grams of iron to warm your hands or feet for up to 4 hours.
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