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Chemistry, 22.06.2019 23:40
The kw for water at 0 °c is 0.12× 10–14 m2. calculate the ph of a neutral aqueous solution at 0 °c.
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Chemistry, 23.06.2019 07:10
Which one of the following is an oxidation-reduction reaction? naoh + hno3 --> h2o + kno3 naoh + hno3 --> h2o + kno3 so3 + h2o --> h2so4 cacl2 + na2co3 --> caco3 + 2 nacl ch4 + 2 o2 --> co2 + 2 h2o al2(so4)3 + 6 koh --> 2 al(oh)3 + 3 k2so4
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Chemistry, 23.06.2019 18:30
Select the correct answer. which statement best explains the octet rule? a. atoms gain, lose, or share electrons to achieve a full valence shell. b. compounds always consist of eight electrons. c. molecules always consist of eight atoms. d. all atoms require eight electrons to form bonds.
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