Which chemical equation is balanced to show that mass is conserved during the reaction?
A. Na + Cl₂ --> NaCl
B. 2H₂ O₂ --> 2H O + O₂
C. CH₄ + O₂ --> CO₂ + 2H₂ O
D. AgNO₃ + MgCl₂ --> AgCl +MgNO₃
Please Help!!!
A. The right side has equal numbers of Na and Cl, so add one Na on the left.
2Na+Cl2 + 2NaCl
Try the others, using similar logic. What do you get?
To determine which chemical equation is balanced to show that mass is conserved during the reaction, we need to check if the number of atoms of each element is the same on both sides of the equation.
Let's go through each option and examine the number of atoms for each element:
A. Na + Cl₂ → NaCl
On the left side, we have one sodium (Na) atom and two chlorine (Cl) atoms. On the right side, we have one sodium (Na) atom and one chlorine (Cl) atom. Therefore, this equation is not balanced.
B. 2H₂O₂ → 2H₂O + O₂
On the left side, we have four hydrogen (H) atoms and four oxygen (O) atoms. On the right side, we have four hydrogen (H) atoms and two oxygen (O) atoms. Therefore, this equation is not balanced.
C. CH₄ + O₂ → CO₂ + 2H₂O
On the left side, we have one carbon (C) atom, four hydrogen (H) atoms, and two oxygen (O) atoms. On the right side, we have one carbon (C) atom, four hydrogen (H) atoms, and two oxygen (O) atoms. Therefore, this equation is balanced.
D. AgNO₃ + MgCl₂ → AgCl +MgNO₃
On the left side, we have one silver (Ag) atom, one nitrogen (N) atom, three oxygen (O) atoms, one magnesium (Mg) atom, and two chlorine (Cl) atoms. On the right side, we have one silver (Ag) atom, one nitrogen (N) atom, three oxygen (O) atoms, one magnesium (Mg) atom, and two chlorine (Cl) atoms. Therefore, this equation is also balanced.
Based on the analysis above, the chemical equation that is balanced to show that mass is conserved during the reaction is option C: CH₄ + O₂ → CO₂ + 2H₂O.