Theoretical yield is the amount supposedly produced by the reaction if it was complete. The balanced chemical reaction is:
Fe2O3(s) + 3 CO<span>(g) = 2 Fe(s) + 3 </span>CO<span>2(g)
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We use the amounts given for the reactants as the starting point of the calculations. We do as follows:
13.4 g Fe2O3 ( 1 mol / <span>159.69 g ) = 0.08 mol
</span>12.3 g CO ( 1 mol / 28.01 ) = 0.44 mol
Therefore, the limiting reactant would be Fe2O3. We use this for the theoretical yield.
0.08 mol ( 2 mol Fe / 1 mol Fe2O3 ) = 0.16 mol Fe (THEORETICAL YIELD)
8.23 g ( 1 mol / 55.85 g ) = 0.15 mol Fe ( ACTUAL YIELD)
Percent yield = 0.15 / 0.16 x 100 = 93.75%
Answer: The correct option is, (B) 12.3 KJ
Solution :
First we have to calculate the moles of water.
Now we have to calculate the amount of heat released.
Formula used :
where,
q = heat released
n = number of moles = 2.04 mole
= molar enthalpy of fusion of a substance = -6.01 KJ/mole
Now put all the give values in the above formula, we get the amount of heat released.
The negative sign indicate heat released.
Therefore, the amount of heat released is, 12.3 KJ
Answer:no
Explanation:
its a gas jkjk its an element
Answer: 4.32g
Explanation:
MM of H2 = 1 x 2 = 2g/mol
2g of H2 contains 6.02x10^23 atoms.
Therefore Xg of H2 will contain 1.3 x 1024 atoms i.e
Xg of H2 = (2 x 1.3 x 1024) / 6.02x10^23 = 4.32g
Answer:
Explanation:
XO3
X + 3x16 = 80
x= 32 atomic mass for sulfur
SO3
