First, lets balance the reaction equation:
4Fe + 3O₂ → 2Fe₂O₃
It is visible form the equation that 4 moles of Fe require 3 moles of O₂
Molar ratio Fe/O₂ = 4/3 = 1.33
Molar ratio O₂/Fe = 3/4 = 0.75
Now, we check the molar ratios present:
Fe/O₂ = 6.8/8.9 = 0.76
O₂/Fe = 1.31
Thus, Iron is the limiting reactant because its ratio is not being fulfilled while the ratio of O₂ is surpassed.
5o2 is a Compound not an element
Balanced chemical reaction:
C₃H₈(g) + 3H₂O(g) → 3CO(g) + 7H₂(g).
M(C₃H₈) = 44.1 g/mol; molar mass of propane.
M(H₂) = 2 g/mol; molar mass of hydrogen.
From balanced chemical reaction: n(C₃H₈) : n(H₂) = 1 : 7.
7m(C₃H₈) : M(C₃H₈) = m(H₂) : M(H₂).
7·8310 kg : 44.1 g/mol = m(H₂) : 2 g/mol.
m(H₂) = 2638.09 kg; mass of hydrogen.
Answer:
0.00663 grams/liter
Explanation:
HCl is a mineral acid with a molar mass of 36.46 g/mol.
No. of moles= mass/RMM
Making mass the subject of the formula:
Mass=Number of moles × RMM
Therefore 0.00040 mol HCl has a mass of:
0.00040 mol × 36.46 g/ mol
=0.01458 grams.
0.01458 grams are in 2.2 liters, Therefore 1 liter will have
0.01458 grams/2.2 liters= 0.00663 grams
concentration= 0.00663 grams/liter
