Answer:
224 grams of O₂
Explanation:
This is the reaction:
2 C₂H₆ (g) + 7 O₂(g) → 4 CO₂ (g) + 6 H₂O (g)
2 moles of ethene react with 7 moles of oxygen.
Let's convert the ethene's mass into moles (mass / molar mass)
60 g / 30 g/m = 2 mol
So, if 2 moles of ethene must react with 7 moles of O₂ and we have 2 moles, obviously we would need 7 moles of oyxgen.
Let's convert the moles to mass ( mol . molar mass)
7 m . 32 g/m = 224 grams
Answer:contains 2 atoms of Fe and 3 atoms of oxygen. Total of 5 atoms in a single molecule
The answer to this question is atomic number
No. of moles= mass given /mass acquired
.0079=x/238
238×.0079=x
1.88~2
therefore the no. of grams =2g
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the presence of water.</span>