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When you stetch a rubber band you can feel the warth from it against your skin. Is the relaxation of the band endo or exothermic?
Also, the molecules that make up a rubber band are long chains of carbon atoms, and when the band is stretched the chains are straightened out. When the band relaxes, the chains return to a tangled state. what happens to the entropy of the band when a stretched band relaxes
The endpoint in the titration is "overshot" A. is the reported molar concentration of the hydrochloric acid solution too high or too low. EXPLAIN
A 33.5 mL sample of a KOH solution of unknown concentration requires 22.1 mL of 0.200 M solution to reach the end point in a titration. What is the molarity of the KOH solution?
which of the following transition metal complexes is diamagnetic?
If the average speed of an oxygen molecule is 4.43 multiplied by 104 cm/s at 25°C, what is the average speed of a CO2 molecule at the same temperature?
iodized salt is a mix of NaCl and KI. if the content of 75 ppm what is the iodine content?
What is the mass percent of MgO in the mixture? Assume that only the MgO reacts with CO2.
The solubility of CaSO4 in pure water at 0oC is 1.13 gram(s) per liter. What is the value of the solubility product.
The experiment all you observed rate law is rate =k [NO]^2 [Br2]. Show this mechanism is valid by deriving the rate law expression and showing that it is equal to the experimentally observed rate law
determine the numerical values for them the subscript hot, cold, and total stands for the hot brick, the cold brick and the sum of the two.
How many moles of HNO3 are present in 33.5 mL of a 2.20 M solution of nitric acid?
You have 75.0 mL of a 2.50 M solution of Na2CrO4(aq). You also have 125 mL of a 1.52 M solution of AgNO3(aq). Calculate the concentration of CrO4 2- after the two solutions are mixed together.
C2H4 + 3O2 = 2CO2 + 2H2O if 6.0 mol of co2 are produced, how many moles of o2 were reacted.
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