AnswersCHS Chemistry AEvidence of Chemical Reactions

Evidence of Chemical Reactions Answers

20 verified answers
1
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Classify each of the following chemical reactions.

Answers:
Selection 1:synthesis and combustion
Selection 2:double replacement
Selection 3:single replacement
Selection 4:decomposition only
2
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3

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4

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5

? +

Question illustration
A
HCl
B
Cl2
C
Na
D
HBr
6

?

Question illustration
A
CHO
B
C2H2 + CO2
C
CO2 + 2H2O
D
C + 2H2O
11

2Na + Cl2 ?

Question illustration
A
2NaCl
B
2NaCl2
C
Na2Cl
D
2NaO + Cl2
12

2MgO ?

Question illustration
A
2Mg + H2O
B
2Mg + O2
C
MgOH + O2
D
MgO + O2
15

Upper A g plus upper N a upper N upper O subscript 3 right arrow upper A g upper n upper O subscript 3 plus upper N a.

Question illustration
A
yes
B
no
16

Upper M n plus upper C a upper O right arrow upper C a plus upper M n upper O.

Question illustration
A
yes
B
no
20

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Answer not available
21

yes✔ no

Answer not available
24

Question text not available

A
yes
B
no
25

Question text not available

A
yes
B
no
28

Al + AgCl ?

Question illustration
A
AlCl3 + Ag
B
AlAg3 + Cl2
C
no reaction
D
AlCl + Cl
29

?

Question illustration
A
Mg(OH)2 + Ca
B
no reaction
C
MgH2 + CaO
D
MgCa + H2O
31

PbCl2 + MgSO4 ?

Question illustration
A
Pb + O2 + MgCl
B
PbMg + ClSO4
C
PbSO4 + MgCl2
D
Pb(SO4)2 + MgCl
32

Which product in the reaction forms a precipitate?

A
PbSO4
B
MgCl2
C
PbMg
D
no precipitate formed
37

AgNO3 + KCl ?

Question illustration
A
K + O2 + NCl
B
KNO3 + AgCl
C
AgK + ClNO3
D
K2NO3 + AgCl2
38

Which product in the reaction forms a precipitate?

A
KNO3
B
AgCl
C
AgK
D
no precipitate formed

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