anonymous
  • anonymous
Please help with this one question ill give medal and become a fan :) 1. In order to predict whether or not a single-replacement reaction takes place, you need to consult a chart that shows the _____. (1 point)
Chemistry
katieb
  • katieb
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anonymous
  • anonymous
The options are periodic table activity series of metals common polyatomic ions ionic charges of representative elements
anonymous
  • anonymous
@Frostbite can u help
Frostbite
  • Frostbite
I would say activity series of metals.

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anonymous
  • anonymous
Ok thanks
anonymous
  • anonymous
can you help me with these two3. In a double-replacement reaction, the _____. (1 point) products are always molecular reactants are two ionic compounds reactants are two elements products are a new element and a new compound 4. Which of the following is a balanced equation representing the decomposition of lead(IV) oxide? (1 point) PbO2 Pb + 2O PbO2 Pb + O2 Pb2O 2Pb + O PbO Pb + O2
Frostbite
  • Frostbite
General form for a double replacement reaction (salt metathesis reaction): A-B + C-D → A-D + C-B So what would you guess?
Frostbite
  • Frostbite
4. we take in a min.
anonymous
  • anonymous
Ok and for 3 I'd guess B or D
Frostbite
  • Frostbite
Okay I can say it is not D. A example of a double replacement reaction could be BaCl2(aq) + NaSO4 (aq) -> NaCl (aq) + BaSO4 (s)
anonymous
  • anonymous
So is it B
Frostbite
  • Frostbite
2 sec need to take a look in my chemistry book now i am geting unsure about it is A or B :P
anonymous
  • anonymous
Oh Ok :)
Frostbite
  • Frostbite
OK here we go: "Double displacement: This is when the anions and cations of two different molecules switch places, forming two entirely different compounds."
anonymous
  • anonymous
So it is B
Frostbite
  • Frostbite
A or B can't fully say, can't find any clear 100% fool proof place in my book that say it is true
Frostbite
  • Frostbite
and 4 i would say should be PbO2 Pb + O2
anonymous
  • anonymous
Ok thank you :)
anonymous
  • anonymous
The answers were B and pb02 + 02 :)
Frostbite
  • Frostbite
Perfect? ^^
anonymous
  • anonymous
Yep :)
anonymous
  • anonymous
#1: activity series of metals. #3: reactants are two ionic compounds. #4: PbO2 ---> Pb + O2

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