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A plastic cup is heated past its melting point,then remolded and cooled. Based on thisinformation, we can say this polymer
1. is a condensation polymer.2. is an addition polymer.3. is thermosetting.4. is entirely amorphous.5. is thermoplastic.6. contains a plasticizer.7. is entirely crystallin
Why is it not possible to use acetic acid rather than formic acid in the Eischwieler-Clarke reaction
How many kilograms of CaH2 are needed to fill a 134 L tank with compressed H2 gas at 154 atm pressure and 22 degrees celsius?
How many grams of lead chromate form when a 1.00-g sample of Pb(NO3)2 is added to 5.0 mL of 1.00 M K2CrO4 solution.
In glycogen degradation, what enzyme is responsible for releasing a glucose molecule attached to the main glucose chain at a branch point
When the concentrations of CH3Br and NaOH are both 0.165 M, the rate of the reaction is 0.0050 M/s. What is the rate of the reaction if the concentrations of CH3Br and NaOH are both increased by a factor of four
What is the standard Gibbs free energy for this reaction? Assume the commonly used standard reference temperature of 298K, What is the Gibbs free energty for this reaction at 3652K? Assume that delta H and delta S do not change with tenperature.
A solution of magnesium chloride is mixed with a solution of sodium hydroxide. Predict any precipitates that are formed
Calculate the change in temperature that occurs when 4.55 g of solid NaOH is added to 100.0 g of water in a constant pressure calorimeter. The specific heat of the solution
The standard reduction potentials of the X1+/X and Y3+/Y couples are 0.23 V and -0.28 V, respectively. What is the cell potential (to the nearest 0.01 V) of the galvanic cell constructed from the two couples if [X1+] = 0.213 M and [Y3+] = 0.0100 M
what is the vapor pressure of ethanol at 290 K when heat of vaporization is equal to 38.56 kJ/mol and the normal boiling point is 351.4?
On a clear day at sea level, with a temperature of 25 degrees Celsius, the partial pressure of N2 in air is 0.78 atm and the concentration of nitrogen in water is 5.3 x 10^-4 M. When the concentration in water is 1.1 x 10^-3 M what is the partial ..
In the following reaction, how many grams of NaBr will produce 244 grams of NaNO3? Pb(NO3)2(aq) + 2 NaBr(aq) PbBr2(s) + 2 NaNO3(aq)
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