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For the reaction, A = B + C, the rate law is k[A]. If it takes 80.0 seconds for 70.0% of a 10.0 gram sample of A to be transformed into products, what is the value of the rate constant?
sulfur trioxide is made from the reaction of sulfur dioxide and oxygen. How many grams of SO3 can be made from the reaction of 3.00 grams SO2 with 2.02 grams O2.
What does this indicate about the relative size of the crystal field splitting for the water ligand compared to the ethylenediamine ligand? And how do you know?
Consider the titration of 84.0 mL of 0.148 M Ba(OH)2 by 0.592 M HCl. Calculate the pH of the resulting solution after the following volumes of HCl have been added. a)0.0 mL b)19.0 mL c)31.0 mL d) 4
Find the molecular formula of a compuond with percentage composition 26.7% P, 12.1% N, and 61.2% Cl and a molecular mass of 695 u.
What volume of a 0.160 M KOH solution would have to be added to 550.0 mL of the acidic solution to neutralize completely all of the acid?
Assuming that the reaction is at equilibrium, what effect do the following changes have on the equilibrium position? (a) addition of co2 (b) addition of heat (c) decrease in the pressure.
One method of commercially removing the skins from potatoes is to soak them in a 3 to 6 M solution of sodium hydroxide for a short time. When the potatoes are removed from this solution, the skins a
If a 2.7 reaction vessel initially contains 725 of cyclopropane at 485 , how long will it take for the partial pressure of cylclopropane to drop to below 105?
A 68-mg sample of a radioactive nuclide is administered to a patient to obtain an image of her thyroid. If the nuclide has a half-life of 12hours, how much of the nuclide remains in the patient aft
Write a brief explanation of what assumption is made in order to determine the molecular weight of your unknown solute when it is dissolved in cyclohexane.
Considering your answers to parts a, b, and c, what conclusions can you draw concerning the structures of species containing the same number of atoms and the same number of valence electrons?
Identify the major type of interactive force in each of the followng substances: OF2, MgF2, Br2, NH3
The water cooled from an initial temperature of 74.60°C to a final temperature of 8.50°C. Calculate the amount of heat released by the water. Express your answer in units of kilojoules.
Suppose instead that the signal is being broadcast from the other side of the Milky Way Galaxy, about 70000 light-years away. How large a radio telescope would we need to detect this signal? (Hint:
The normal level of creatinine in the blood for adults is aproximatlely 1.0 mg per deciliter of blood. if the density of blood is 1.025 g/ml calculate the molality of a normal creatinine level in a
An airplane is pressurized with air to 700 mmHg. If the partial pressure of oxygen drops below 110 mmHg, passengers become drowsy. If this happens, oxygen masks are released. What is the total cabin
Write a chemical equation for the reaction that occured during the addition of iodine to all-trans-lycopene. Write a feasable reaction mechanism for this reaction.
Tincture of iodine is I2 dissolved in ethanol, C2H5OH. A 1% solution of tincture of iodine is 10.0g of solute for 1000. g of solution. How many grams of solvent are present in 1000. g of this soluti
Given that chemical potential is derivative of free energy (E-TS) with respect to N(for solvent) and n for solute, derive formulas for chemical potential of solution.
A 35.0 mL sample of gas is enclosed in a gas tight syringe at 22 degrees celsius. If the syringe is immersed in an ice bath at 0 degrees celsius, what is the new gas volume?
113 ml of oxegen is collected over water 22 deges and 741 mm and left in postion over night next day volume reduced to 109 ml and tempecture is reads 21 degres what is the preasure on the second da
Calculate the pH during the titration of 20.00 mL of 0.1000 M hydrazine N2H4(aq), with 0.1000 M HCl after 20.25 mL of the acid have been added.
To what pressure should you fill the acetylene tank to ensure that you run out of each gas at the same time? Assume ideal behavior for all gases.
What is the pH of a soft drink in which the major buffer ingredients are 5.10 g of NaH2PO4 and 4.10 g of Na2HPO4 per 355 mL of solution?