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Ede4ka [16]
3 years ago
14

Which element has the greatest density at STP? A)calcium. B)carbon C) silicon D)sodium

Chemistry
2 answers:
IgorLugansk [536]3 years ago
6 0
Sodium has the greatest density at STP
Paladinen [302]3 years ago
4 0
Sodium has the greates element
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The energy release when dissolving 1 mol of NaOH in water is 445.1 kJ
the mass of NaOH to be dissolved is 32.0 g
The number of NaOH moles in 32.0 g - 32.0 g / 40 g/mol =  0.8 mol
the energy released whilst dissolving 1 mol of NaOH - 445.1 kJ
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answer is -356.08 kJ
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