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A rubber is subjected to a shear stress such that larmdax=l, larmday=1. Obtain an expression relating the shear stress, s, and the shear strain, g, assuming g=larmda-1/larmda. Comment on the difference between this stress/strain relationship and the one for simple elongation.
c2h2g2h2g-gt c2h6gc2h2- delta h 226.7c2h6- delta h -84.7a.write the equation for the heat of formation of c2h6gb. use
suppose a can contains a residual amount of gas at a pressure of 755 mm hg and a temperature of 25 degc. what would the
What is the order with respect to each reactant and the overall order? b. What is the rate constant? c. What is the complete rate law for this reaction? d. Most reactions exhibit different rates for the individual reactants and products based on sto..
What is the volume in mL of 0.762 M HCl(aq) needed to reach halfway to the equivalence (stoichiometric) point in the titration of 41.9 mL of 0.457 M N2H4(aq) (Kb = 1.7 x 10-6).
When a glow stick is placed in a freezer, its chemiluminescence lasts a significant time longer. How might this come about?
Question- Imagine that you could hold two atoms that are bonded together, twist them, and not change the bond length. Would it be easier to twist (rotate) around a single bond or around a double (plus) bond, or would they be the same
Rose Bengal is a chromophore used in biological staining that has an absorption maximum at 559.1 nm and several other shorter wavelength absorption bands in the ultraviolet and visible regions of the spectrum when dissolved in ethanol. What is the..
If 315 ml of hydrogen gas is collected over water at 25 degrees C at a total pressure of 742 mm Hg , how many grams of Zn reacted?
The electophilic addition reaction of conjugated dienes that occurs at low temperatures and/or short reaction times is said to be under what? A)thermodynamic control B)kinetic control C)1,2-additon control D) 1,4-addition control
Determine the pH of a solution of 10-3 M sodium formate. Formate is a byproduct of microbial metabolism, and can also serve as an energy source for anaerobic bacteria
Problem- A certain metal crystallizes in a body-centered cubic arrangement and has a density and atomic radius of 5.243 g/cm3 and 198.4 pm respectively. What is the atomic number of this element
Define the total mass flow rate of a process stream is 67 kg/h. If the mass fraction of toluene in the stream is 0.65. Explain what is the mass flow rate of toluene
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