Asked by MLASSSPE
In which chemical equation is the number of atoms in the reactants the same as the number of atoms in the products?
Li2CO3 → LiO + CO2
Zn + 2HCl → H2 + ZnCl2
CO2 + H2O → CH2OH + O2
CH4 + O2 → CO2 + 2H2O
Li2CO3 → LiO + CO2
Zn + 2HCl → H2 + ZnCl2
CO2 + H2O → CH2OH + O2
CH4 + O2 → CO2 + 2H2O
Answers
Answered by
MLASSSPE
Which statement is true regarding a chemical reaction?
A. The total number of atoms does not change, so mass is conserved in the reaction.
B. Even if the total number of atoms does not change, mass may not be conserved in the reaction.
C. Even if the total number of atoms changes, mass may not be conserved in the reaction.
D. The total number of atoms changes, so mass is conserved in the reaction.
A. The total number of atoms does not change, so mass is conserved in the reaction.
B. Even if the total number of atoms does not change, mass may not be conserved in the reaction.
C. Even if the total number of atoms changes, mass may not be conserved in the reaction.
D. The total number of atoms changes, so mass is conserved in the reaction.
Answered by
MLASSSPE
In a chemical reaction, two molecules with a total mass of 76 amu react to form a single molecule. What is the mass of the molecule that is formed?
A. 228 amu
B. 152 amu
C. 38 amu
D. 76 amu
A. 228 amu
B. 152 amu
C. 38 amu
D. 76 amu
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