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Chemistry, 21.06.2019 15:50
Which of these reactions are redox reactions? check all that apply.cd + hcl โ cdcl2 + h2cucl2 + na2s โ 2nacl + cuscaco3 โ cao + co2 2zns + 3o2 โ 2zno + 2so2 ch4 + 2o2 โ co2 + 2h2o
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Chemistry, 21.06.2019 18:30
Covalent network solids typically have melting points and boiling points. the chemical formula of a network solid indicates in the molecule.
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Chemistry, 22.06.2019 18:00
Answer asap need to be answered by wednesday morning explain how a buffer works, using an ethanoic acid / sodium ethanoate system including how the system resists changes in ph upon addition of a small amount of base and upon addition of a small amount of acid respectively. include the following calculations in your i. calculate the ph of a solution made by mixing 25cm3 0.1m ch3cooh and 40cm3 0.1m ch3coo-na+. [ka = 1.74 x 10-5 m] ii. calculate the ph following the addition of a 10cm3 portion of 0.08 m naoh to 500cm3 of this buffer solution. iii. calculate the ph following the addition of a 10cm3 portion of 0.08 m hcl to 200cm3 of the original buffer solution.
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Chemistry, 22.06.2019 20:30
The activation energy for the reaction no2(g)+co2(g)โถno(g)+co(g) is ea = 300 kj/mol and the change in enthalpy for the reaction is ฮดh = -100 kj/mol . what is the activation energy for the reverse reaction?
Answers: 3
What is the molarity of a cacl2 solution containing 330 grams of cacl2 in 1 liter of solution?...
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