Chemistry, 14.12.2020 17:00, memester74
PLEASE HELP ill be asking more questions for whoever wants to help THANK YOU:)
A. In a chemical reactions, substances after the arrow are called .
C2H4 + O2 β CO2 + H2O
1 products
2 reactants
3 no answer text provided
4 chemicals
B. In this reaction: sodium + water -> sodium hydroxide + hydrogen gas
which substances are the reactants?
1 hydrogen gas
2 sodium hydroxide + hydrogen gas
3 sodium + water
4 sodium hydroxide
C. This is an example of what type of reaction?
Mg + Fe2O3 β Fe + 3 MgO
1 decomposition
2 double replacement
3 single replacement
4 synthesis
5 combustion
D. This is an example of what type of reaction?
Ca(OH)2 + Al2(SO4)3 β CaSO4 + Al(OH)3
1 synthesis
2 decomposition
3 double replacement
4 combustion
5 single replacement
E. This is an example of what type of reaction? PbSO4->PbSO3 + O2
1 single replacement
2 combustion
3 double replacement
4 synthesis
5 decomposition
F. This is an example of what type of reaction?
C2H4 + O2 β CO2 + H2O
1 single replacement
2 double replacement
3 synthesis
4 decomposition
5 combustion
Answers: 1
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