1. Pour chacun des 4 composés suivants:
a) SF4 (tetrafluorure de soufre)
b) SO3 -2 (ion sulfi...
1. Pour chacun des 4 composés suivants:
a) SF4 (tetrafluorure de soufre)
b) SO3 -2 (ion sulfite)
c) NH4 + (ion ammonium)
d) IF3 (trifluorure d'iode)
Donner:
i) La stucture de Lewis
ii) Le calcul des charges formelles pour chaque atome différent
iii) La géométrie électronique et moléculaire du composé
iv) La représentation 3D avec la polarité des liens et le moment dipolaire du composé
v) Identifier les interactions intermoléculaires possibles entre les composés a) et b) et entre c)
et d) (Question non anonyme )
Answers: 2
Chemistry, 22.06.2019 21:00
Which answer tells the reason the earth’s climate is getting warmer? too many animals are becoming extinct. large glaciers are melting in antarctica. the earth is moving closer to the sun. driving cars gives off gases that trap heat in the atmosphere.
Answers: 1
Chemistry, 23.06.2019 06:00
•what conclusions can you make about the relationship between the volume of a gas and its temperature? • what conclusions can you make about the relationship between the volume of a gas and its pressure? • what possible variables have you not accounted for? as you did the procedures, is it possible that the atmospheric pressure may have changed? if it did change over the course of your experiment, then how would your results have been affected?
Answers: 3
Chemistry, 23.06.2019 06:40
The combustion of methane, ch4, releases 890.4kj/mol. that is, when one mole of methane is burned,890.4 kj are given off to the surroundings. this meansthat the products have 890.4 kj less than the reactants.thus, ah for the reaction = - 890.4 kj. a negative symbolforah indicates an exothermic reaction.ch (g) + 20 (g)> co2 (g) + 2 h0 (1); ah = - 890.4 kga) how much energy is given off when 2.00 mol of ch,are burned? b) how much energy is released when 22.4g of ch. areburned?
Answers: 1
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