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Q1) i) Write a balanced equation to show the polymerisation of the molecule CF2CF2. Show two repeat units of the polymer.(ii) Name the polymer you have drawn in Q1 (i) above. Give an everyday use for the polymer from CF2CF2.
Suppose that an excess of propane, C3H8 burns in 320 g of O2. How many moles of H2O will be formed
Calculate the energy required to keep lightbulb burning for 3 hours in each of the energy units of Joules and Kilocalories
How much heat is absorbed when 45.00 g of C(s) reacts in the pressence of excess SO2(g) to produce CS2(l) and CO(g) according to the following chemical equation?
in one experiment .886 mole of NO is mixed with .503 mole of O2. calculate which of the two reactants is the limiting reagent . calculate also the number of moles NO2 produced
The original conditions in a container filled with gas at constant temperature are 183 mL and 310 mmHg. The desired new volume is 90.6 mL.
The pH of the solution at the equivalence point. e) The pH of the solution after 40.0 mL of HCl are added.
What percentage of a serving of this sandwich did Michael burn during his winning time of 1 minute 54 seconds in the 200-meter individual medley relay race?
0.10 gram sample of a gas occupies 47 ml of vol at 25 deg C and 755 mm Hg. What's the FW of the compound?
15g of steam at 373 K is added to 250g of H2O at 298 K at constant pressure of 1 bar. Is the final state of the system steam or liquid water? Calculate changes in entropy for the process.
Limestone (CaCO3) is used to remove acidic pollutants from smokestack flue gases. It is heated to form lime (CaO), which reacts with sulfur dioxide to form calcium sulfite
What is the percent yield of a reaction using 10 moles of acetone and 16 moles of benzaldehyde and obtains
in experiment to find emperical formula of magnesium oxide, why the empty crucible and cover fired to red?
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