Monday, June 22, 2020
Which molecules have an overall dipole moment? 1 carbon monoxide, CO 2 phosphine, PH3 3 carbon dioxide, CO2
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Question 31 [Chemical Bonding > Covalent bonding and co-ordinate (dative covalent) bonding including shapes of simple molecules] Wh...
Wednesday, June 17, 2020
After black and white photographic film has been developed, unreacted silver bromide is removed by reaction with sodium thiosulfate.
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Question 19 [Group 7 > reactions of halide ions] After black and white photographic film has been developed, unreacted silver brom...
Monday, June 15, 2020
A rod PQ is attached at P to a vertical wall, as shown in Fig. 3.1. The length of the rod is 1.60 m. The weight W of the rod acts 0.64 m from P.
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Question 42 A rod PQ is attached at P to a vertical wall, as shown in Fig. 3.1. The length of the rod is 1.60 m. The weight...
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