Alright, let's go through the steps to calculate the mass of magnesium oxide formed.
### Given Data:
1. Mass of crucible and lid = 32.00 g
2. Mass of magnesium = 0.24 g
3. Mass of crucible, lid, and magnesium oxide = 32.40 g
### Calculation Steps:
1. First, determine the combined mass of the crucible and lid.
[tex]\[
\text{Mass of crucible + lid} = 32.00 \, \text{g}
\][/tex]
2. Next, find the total mass after the reaction, which includes the mass of crucible, lid, and the newly formed magnesium oxide.
[tex]\[
\text{Mass of crucible + lid + magnesium oxide} = 32.40 \, \text{g}
\][/tex]
3. To find the mass of the magnesium oxide formed, subtract the mass of the crucible and lid from the total mass.
[tex]\[
\text{Mass of magnesium oxide} = (\text{Mass of crucible + lid + magnesium oxide}) - (\text{Mass of crucible + lid})
\][/tex]
4. Plug in the given values to solve for the mass of magnesium oxide:
[tex]\[
\text{Mass of magnesium oxide} = 32.40 \, \text{g} - 32.00 \, \text{g}
\][/tex]
5. Subtract the values:
[tex]\[
\text{Mass of magnesium oxide} = 0.40 \, \text{g}
\][/tex]
### Final Answer:
The mass of magnesium oxide formed is 0.40 g.
