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CuS + KCl-CuCl2 +K2S What coefficient of KCl will balance this equation?
Mg + Cl2 - MgCl2
BaCO3 - BaO + CO2
2 N2H4 + N2O4 - 3 N2 + 4 H2O
Equals the mass of the reactants
synthesis
The molecules gain more energy and hit the walls of the can more often
2
single replacement
Which of the following chemical reactions is a decomposition reaction?
Mg + Cl2 - MgCl2
BaCO3 - BaO + CO2
2 N2H4 + N2O4 - 3 N2 + 4 H2O
Equals the mass of the reactants
synthesis
The molecules gain more energy and hit the walls of the can more often
2
single replacement
When a spray can is thrown onto a fire, it soon explodes. Which statement best describes why this occurs?
Mg + Cl2 - MgCl2
BaCO3 - BaO + CO2
2 N2H4 + N2O4 - 3 N2 + 4 H2O
Equals the mass of the reactants
synthesis
The molecules gain more energy and hit the walls of the can more often
2
single replacement
A balanced chemical equation reflects the idea that the mass of the products____
Mg + Cl2 - MgCl2
BaCO3 - BaO + CO2
2 N2H4 + N2O4 - 3 N2 + 4 H2O
Equals the mass of the reactants
synthesis
The molecules gain more energy and hit the walls of the can more often
2
single replacement
What type of reaction is represented by this equation? NaCl + F2 - NaF + Cl2
Mg + Cl2 - MgCl2
BaCO3 - BaO + CO2
2 N2H4 + N2O4 - 3 N2 + 4 H2O
Equals the mass of the reactants
synthesis
The molecules gain more energy and hit the walls of the can more often
2
single replacement
Which of these represents a properly balanced equation?
Mg + Cl2 - MgCl2
BaCO3 - BaO + CO2
2 N2H4 + N2O4 - 3 N2 + 4 H2O
Equals the mass of the reactants
synthesis
The molecules gain more energy and hit the walls of the can more often
2
single replacement
What type of chemical reaction is S8(s) + 8 O2 (g) - 8 SO2 (g)
Mg + Cl2 - MgCl2
BaCO3 - BaO + CO2
2 N2H4 + N2O4 - 3 N2 + 4 H2O
Equals the mass of the reactants
synthesis
The molecules gain more energy and hit the walls of the can more often
2
single replacement
Which equation is balanced?
Mg + Cl2 - MgCl2
BaCO3 - BaO + CO2
2 N2H4 + N2O4 - 3 N2 + 4 H2O
Equals the mass of the reactants
synthesis
The molecules gain more energy and hit the walls of the can more often
2
single replacement
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