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Question: If in the previous question you raise the temperature of the gas from 300K to 600K,
a. By how much does the collision time change?
b. Explain why the mean free path does not change when the temperature goes up.
500ml Buffer solution is 0.250 M in HNO2 as well as 0.200 M in KNO2. The Ka for HNO2 is 4.6x10-4. Explain what is the initial pH of this buffer
A generic salt, AB, has a molar mass of 243 g/mol and a solubility of 8.90 g/L at 25 C what is the Ksp of this salt
an activation energy of 43.6 kJ/mol, what will be the rate constant for this reaction at 75oC?
Suggest a simple chemical test that would distinguish between the following compounds. State what you would see: a) n-pentane and 1-pentene
Given that the solubility of magnesium fluoride is 0.0729 g/L, calculate the value of Ksp for this salt
we were given freezing point and density and were asked to find kf and in second question enthalpy and entropy values
If a sample has an initial mass of 2.24 grams and undergoes decay until it has a mass of 0.140 grams, how many half-lives have passed?
Some physical properties of water are shown below. freezing point 0.00°C boiling point 100.00°C Kf 1.86°C/m Kb 0.512°C/m What is the freezing point of a solution of calcium chloride that contains 26.0 g CaCl2 dissolved in 330. g of water
A weak acid (HA) has a pKa value of 3.00. At what pH is [HA] = [A-]? What is the predominant species of HA at pH 2.25? What is the predominant species of HA at pH 3.90?
What is the molarity of a sodium hydroxide solution if 34.26 mL react with 0.337g of sulfamic acid
suppose 7.70g of methane is mixed with 54.7g of oxygen . Calculate the maximum mass of water that could be produced by the chemical reaction
What mass of carbon dioxide is produced from the complete combustion of 2.90×10-3g of methane
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