Answer:
93.33 g of Fe
Explanation:
The balanced equation for the reaction is given below:
4Fe + 3O₂ —> 2Fe₂O₃
Next, we shall determine the masses of Fe and O₂ that reacted from the balanced equation. This can be obtained as follow:
Molar mass of Fe = 56 g/mol
Mass of Fe from the balanced equation = 4 × 56 = 224 g
Molar mass of O₂ = 2 × 16 = 32 g/mol
Mass of O₂ from the balanced equation = 3 × 32 = 96 g
SUMMARY:
From the balanced equation above,
224 g of Fe reacted with 96 g of O₂.
Finally, we shall determine the mass of Fe required to react with 40 g of O₂. This can be obtained as follow:
From the balanced equation above,
224 g of Fe reacted with 96 g of O₂.
Therefore, Xg of Fe will react with 40 g of O₂ i.e
Xg of Fe = (224 × 40)/96
Xg of Fe = 93.33 g
Therefore, 93.33 g of Fe is required to react with 40 g of O₂.
Answer:
Mass of Fe = 32.55 g
Explanation:
Molar Mass of Fe atom = 55.845 g/mol
It means,
1 mole of Fe contains = 55.845 g ..............(1)
From mole concept,
<u>1 mole </u>of Fe contain = atom ..........(2)
Replace 1 mole in equation (2) by 55.845 g , it become :
55.845 g of Fe contain = atoms
Reverse the equation now
atoms of Fe contain =55.845 g
1 atom of Fe contain = g
atom contain =
on calculation,
atom contain = 32.55 g of Fe
Mass of Fe = 32.55 g
The mass of carbon dioxide produced from the complete combustion of 4.80 x10^-3 g of methane is 0.0132 grams
calculation
write the equation for combustion of methane (CH4)
CH4 + 2O2 → CO2 + 2H2O
find the moles of CH4 used = mass/molar mass
molar mass of CH4 = 12 +(1 x4) = 16 g/mol
moles =( 4.80 x10^-3 g) / 16 g/mol = 3 × 10^-4 moles
by use of mole ratio between Ch4 to CO2 which is 1:1 the moles of CO2 is also = 3 x10^-4 moles
mass of CO2 is therefore = moles x molar mass of Co2
The molar mass of Co2 = 12 +(16 ×2) = 44 g/mol
mass is therefore = (3 ×10^-4 moles) ×44 g/mol = 0.0132 grams
Answer:
No they are not the same the are both di
Answer:
Explanation:
scientific laws are not your everyday laws but society laws really have to be followed its whats keeps balance in this world