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What area at least two materials which are made up of polymers? Descrive in terms of the structure of the polymer and relate it to the properties of the product or material
a)Calculate the theoretical yield of when 109g of C2H6 reacts with 228g Cl2 of , assuming that and react only to form C2H5Cl and HCl .
The most common source of copper Cu is the mineral chalcopyrite CuFeS2. How many kilograms of chalcopyrite must be mined to obtain 300.g of pure Cu
Calculate the volume (L) of Cl2 at a pressure of 0.968 atm and 11 oC that would be required to react with 8.58 g of NaBr according to the balanced equation.
calibration data for a f-ion-selective electrode using kf standard solutions prepared in buffer of 0.5 m ionic strength
A 0.2527-g sample of a mixture of Mg(OH)2 and Al(OH)3 was treated with 50.00 mL of 0.225 mol L 1 HCl(aq). The resulting solution required 13.73 mL of 0.176 mol L 1 NaOH(aq) to neutralize the excess, unreacted HCl.
Consider a string with a length of 54.5 cm tied at both end (like on a stringed instrument). If the frequency of the first harmonic on the string is 256 Hz, determine the speed of the wave in the string. Post your answer in m/sand with 3 significa..
How many moles of ions are found in 345 ml of a solution containing 4.22 g/L aluminum sulfate
Methanol is toxic because it is metabolized in a two-stop process in vivo to formic acid (HCOOH). Consider the following overall reaction under standard conditions: O2(g) + CH3OH(l) -> HCOOH(l) + H2O(l) +1019.6 kJ
What happens to the time at which the mid point of the breakthrough curve exists the column if the particle size is halved but the adsorption isotherm and column size stay the same?
A weather balloon is filled with 5.0 liters of helium at 27C and 1.0 atm. what volume does the balloon have when it has risen to a point in the atmosphere where the pressure is 60 torr and the temperature is -160 C
How can you tell when looking at organic compounds what is saturated? Here are some examples?
A 50 mL sample of 0.06M HC3H5O2 (propanoic acid) is titrated with 20 mL of 0.07M NaOH. What is the pH at this point of the titration? (Ka of HC3H5O2 = 1.3*10^-5)
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