Question

question 5
balance the following the chemical equation:
1mg, 20 1mg, 01 mg + 2o o2 → mgo
blank 1: 1mg, 20 1mg, 01
blank 2: 2g
blank 3:
question 6
balance the following the chemical equation
al + o2 → al2o3

Explanation:

Step 1: Analyze the unbalanced equation

The unbalanced chemical equation is \( \text{Mg} + \text{O}_2
ightarrow \text{MgO} \). We need to balance the number of Mg and O atoms on both sides.

Step 2: Balance Mg atoms

On the left side, we have 1 Mg atom, and on the right side, we have 1 Mg atom in \( \text{MgO} \). But let's check O atoms. On the left, \( \text{O}_2 \) has 2 O atoms; on the right, \( \text{MgO} \) has 1 O atom.

Step 3: Balance O atoms

To balance O atoms, we can put a coefficient of 2 in front of \( \text{MgO} \), so the equation becomes \( \text{Mg} + \text{O}_2
ightarrow 2\text{MgO} \). Now, Mg atoms are unbalanced (1 on left, 2 on right), so we put a coefficient of 2 in front of \( \text{Mg} \).

Step 4: Write the balanced equation

The balanced equation is \( 2\text{Mg} + \text{O}_2
ightarrow 2\text{MgO} \). So for the given blanks (assuming the format is \( \text{[coefficient]Mg} + \text{[coefficient]O}_2
ightarrow \text{[coefficient]MgO} \)):

• Blank for Mg: 2 (since we need 2 Mg atoms)
• Blank for \( \text{O}_2 \): 1 (since \( \text{O}_2 \) has a coefficient of 1)
• Blank for \( \text{MgO} \): 2 (since we have 2 \( \text{MgO} \) molecules)

Answer:

Blank 1 (Mg coefficient): 2
Blank for \( \text{O}_2 \) coefficient: 1
Blank for \( \text{MgO} \) coefficient: 2

(Assuming the blanks correspond to coefficients of Mg, \( \text{O}_2 \), and \( \text{MgO} \) respectively in the equation \( \text{Mg} + \text{O}_2
ightarrow \text{MgO} \))