Question 10/10 (2) Calculate the number of moles
40g of sulphur
15g of sodium chloride
1 -
2-
Where Ar of S=32 Na =23,Cl = 35.5
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Draw metallic bonding if two copper

Asample of air with a volume of 2.20m3 at a pressure of 105 kpa and a temperature of 30c is cooled to 10c and the pressure is reduced to 75.0 kpa. what is the new volume? 6.9 1.34 2.56 43.0 2.88

Most materials are not magnetic because their magnetism has worn off. their magnetic domains are arranged randomly. they lack magnetic fields. earth’s heat has destroyed their magnetism.