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A 4.46×105 kg subway train is brought to a stop from a speed of 26.8 miles/hour in 0.435 m by a large spring bumper at the end of its track. What is the force constant k of the spring?
it takes 208.4 kj of energy to remove 1 mole of electrons an atom on the surface of rubidium metal. how much energy
can you write the oxidation reduction reaction for a solution of potassium dichromate added to an acidified solution
A gaseous mixture containing 0.200 mol fraction of carbon tetrachloride (CCl4) and 0.800 mol fraction of dry air is initially at 68.0°C and 1169 mmHg. 1- If this mixture is cooled at a constant pressure, at what temperature does the CCl4 first sta..
Provide a mechanism to account for the fact that acid-catalyzed dehydration of 2,2-dimethylcyclohexanol and of 2,3-dimethylcyclohexanol (mixed isomers) produces the same major product.
Which of these processes does not require energy input? Transcription, translation, replication, synthesis of phospholipids, or do they all require energy?
determine whether or not it is chiral and specify the absoute configuration of any chiral carbons
at 710. mm hg a sample of nitrogen gas occupies 625 ml. what volume does the gas occupy if the temperature remains
Suppose you are given an acid, HA, that has a Ka=2.50 × 10-3 at 25.0 °C. a. Write the balanced chemical reaction for HA(aq) reacting with H2O(l).
Propane reacts with molecular fluorine to form fluoropropane in the presence of light energy. Using curvy arrows to show the movement of electrons, present a reasonable mechanism for this reaction. Label each step in the process.
Determine the values for the equilibrium constants for the following reactions. (Hint: When reaction equations are added, the equilibrium expressions are multiplied.) (a) Na2O(s) + 1/2 O2(g) Na2O2(s) (b) NaO(g) + Na2O(s) Na2O2(s) + Na(l) (c) 2 NaO..
constant ratenbsp is 3.20times10-4 ms for a zero-order reaction. concentration has dropped to 9.00times10-2 mnbsp after
according to the law of conservation of mass if the products of a reaction have a mass of 64.0 grams then the total
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