In the balanced reaction
2 Fe + O₂ → 2 FeO
2 moles of iron (Fe) react with 1 mole of molecular oxygen (O₂) to produce 2 moles of iron oxide (FeO). The ratio of Fe to FeO is 1-to-1, so if one starts with 42.4 mol of Fe, one will end up with the same amount of FeO, 42.4 mol.
Look up the molar mass of Fe and O:
• Fe = 55.845 g/mol
• O = 15.999 g/mol
Then the molar mass of FeO is approximately 71.835 g/mol, and so the mass of 42.4 mol of FeO is
(42.4 mol) × (71.835 g/mol) ≈ 3050 g
Answer:
The line segments AA' and BB' are parallel and congruent
Step-by-step explanation:
The equation factors into (x+2)(x+6) = 0. The answers to this question are -2 and -6.
= 1/2 (a + b) h let me know if this helps :)
Answer:
It is 2πrh + 2π
Step-by-step explanation:
