Lo 2.7 The different grades of paper are reprocessed separately at the paper mill.
2 8 The paper is chopped into small pieces and mixed with hot water to form a
pulp.
3
ACTIVITY 3
Match the NAME with the correct DESCRIPTION. Complete the ANSWER by writing
the correct letter.
(5)
NAME
1. Landfills
2. Pulping
3. Crude oil
ANSWER DESCRIPTION
A. The containers or wrappers used to hold or contain
products
B. The ability to break down naturally into simple,
harmless substances
C. Large holes in the ground in which waste products are
buried
D. A fossil fuel, used to make petrol, plastic, paraffin and
other products
E. Lightweight plastic used for packaging for example
takeaway holders that can be disposed after use
F. Wood chips are broken down into thin fibres
G. Tree logs are cut into small chips
4. Chipping
5. Packaging
6. Polystyrene
7 Biodegradable​

Lem 2 the data below are for the system ethyl propyl ether (1)-chloroform (2) at 0.5 bar. use the data to answer the following questions (all questions refer to p d 0: 5 bar). a) what are the boiling points of the pure components at 0.5 bar? b) a mixture with the overall composition z1 d 0: 1 is brought to 47.6ä±c, 0.5 bar. what is the phase? c) 100 mole of a mixture with z1 d 0: 1 (state a) is mixed with 22 mole of pure ethyl propyl ether vapor (state b). the mixing takes place at 47.6 ä±c, 0.5. bar. what is the phase of the resulting mixture (state c)? if the state is a v/l mixture report the number of moles and mole fractions in each phase. d) plot the txy graph and show states a, b and c. the graph must be done by computer and should be properly annotated. ethyl propyl ether (1) - chloroform (2) at 0.5 bar t ( ä±c) x1 y1 t ( ä±c) x1 y1 42.9 0.000 0.000 49.0 0.470 0.455 43.0 0.020 0.010 49.1 0.520 0.520 43.9 0.065 0.029 48.9 0.567 0.592 45.4 0.156 0.089 48.3 0.652 0.720 46.4 0.215 0.142 47.6 0.745 0.815 47.6 0.296 0.223 46.7 0.822 0.872 48.3 0.362 0.302 45.7 0.907 0.937 48.7 0.410 0.375 44.6 1.000

Draw metallic bonding if two copper

Which of the following contributes to the structural rigidity of cellulose? adjacent glucose polymers are stabilized by hydrogen bonding. glucose residues are joined by (α1→4) linkages. cellulose is a highly branched molecule. the conformation of the glucose polymer is a coiled structure.