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Q1. What are thermoplastics?
Q2. What are thermosetting plastics?
Q3. What are the uses of thermoplastics?
Q4. What are the uses of thermosetting plastics?
Q5. Give examples of thermoplastics.
Q6. Give examples of thermosetting plastics
Q7. What the various conditions for combustion to take place?
Q8. What causes air pollution?
Q9. Name the fuel used in gas cylinders.
Q10. Which temperature is required for burning to take place?
Hsolution for neutralization of HCl(aq) and NaOH(aq): Volume of HCl: 0.050 L Volume of NaOH: 0.050 L Volume total: 0.10 L Molarity of HCl: 1.99 M Molarity of NaOH: 1.99 M ?T for reaction B: 12°C Calculate the value (calories) for the heat of react..
A gas is heated from 268 K to 290 K while its volume is increased from 25.0 L to 37.0 L by moving a large piston within a cylinder. If the original pressure was 0.90 atm, what would be the final pressure?
What is the wavelength of a photon of electromagnetic radiation having a photon energy of 4.56X10^-19 J? Report your answer in nanometers, to the correct number of significant figures.
mpurities tend to increase the melting point of a pure solid.
write the overall equation for the production of nitric acid by the ostwald process by combining the preceding and any
While chemically treated, all the fluorine was converted to CaF2 (molar mass = 78.1 g/mol). The mass of CaF2 obtained was 12.1 g. Define the mass of methyl fluoro acetate in the original mixture.
What is the deBroglie wavelength in meters of a 1-ton (907 kg) vehicle having a velocity
Based on your knowledge of explain how MO diagrams are constructed for the 2nd row diatomics, construct and MO diagram for Cl2. That Indicate all atomic orbitals and molecular orbitals as well as molecular orbitals for both the core and valence el..
Predict whether or not a precipitate will form upon mixing 75.0 mL of a NaOH solution with pOH=2.58 with 125.0 mL of a 0.018 M MgCl2 solution. Identify the precipitate, if any. Express as a chemical formula
What must the concentration be, of each member of the buffering acid/base pair, if the reaction is expected to release 0.1 millimoles of H+?
Formic acid (Ka= 1.7 x 10^-4) and sodium formate were used to prepare a buffer solution of pH 4.31. The concentration of the undissociated formic acid in this buffer solution was 0.80 mol/L
During an experiment, a student mixed 14.5 mL of a .5 M sodium flouride solution with 15.6 mL of a .750 M hydrofluoric acid solution. The measured pH was 3.24. Calculate the pKa.
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