Answer:
Approx. 80.g
80
⋅
g
Explanation:
We need a stoichiometric reaction that represents the decomposition of calcium carbonate:
C
a
C
O
3
(
s
)
+
Δ
→
C
a
O
(
s
)
+
C
O
2
(
g
)
↑
⏐
And thus calcium oxide and calcium carbonate are present in equimolar amounts:
Moles of calcium oxide
=
44.5
⋅
g
56.08
⋅
g
⋅
m
o
l
−
1
=
0.794
⋅
m
o
l
.
Given the stoichiometry of the reaction, an equimolar quantity of calcium carbonate MUST have been present.
This represents a mass of
0.794
⋅
m
o
l
×
100.09
⋅
g
⋅
m
o
l
−
1
≅
80
⋅
g
In the decomposition reaction, what does the
Δ
symbol represent?
Explanation:
