Calculate the time required for the reactant concentration
Calculate the time required for the reactant concentration to drop to (a) 25 percent of the initial value, (b) 10 percent of the initial life. The half-life of a first-order decomposition reaction is known to be 10 minutes.
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Determine an unknown with the molecular formula C4H6. Determine the numbers of degrees of un-saturation are present?
Explain how you would use infrared spectroscopy to distinguish among the two compounds when the cyclohexene and 2-hexyne both have the molecular formula C6H10
Explain what temperature will it rise if the aluminum is oxidized by the air? 1 wt% aluminum is dispersed in aluminum oxide. It is initially at 298K and the entire mass maybe assumed to rise at same temperature.
Determine the numbers of N atoms are there in one mole of N2? One mole of N2 contains how many N2molecules? One mole of iron (III) sulfate, Fe2 (SO4)3, contains how many moles of SO42- ions? Determines the numbers of moles of O atoms?
A 29.19 mL sample of the HCl solution required 21.18 mL of NaOH solution for complete reaction. What is the molarity of the HCl solution? A 0.05500 M solution of NaOH was used to titrate a solution of unknown concentration of HCl.
Potassium bromide (10.5g), also at 24.2 degree C, is added to the water, and after the KBr dissolves the final temperature is21.1 degree C. A coffee-cup calorimeter initially contains 125g water at 24.2degree C.
Determine the minimum power to continuously separate an equimolar mixture of the argon and methane at the 100 C and 0.3 MPa to the pure components at the 300K and 0.1MPa? If any heat is involved in the process, it passes from/to the surroundings
Suppose the percent abundance of the lighter isotope were 62%. Chlorine has two stable isotopes of mass 34.97 u and 36.97 u. Explain what would be the atomic mass of Cl when the actual abundance is 75.77%.
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