Answer:
24 moles of oxygen are required.
Explanation:
Given data:
Number of moles of CuFeS = 12 mol
Number of moles of O₂ react = ?
Solution:
Chemical equation:
2CuFeS + 4O₂ → Cu₂S + 3SO₂ + 2FeO
now we will compare the moles of O₂ and CuFeS.
CuFeS : O₂
2 : 4
12 : 4/2×12 = 24 mol
In the winter bears hibernate because food is scarce during the winter, and it is also very cold. During hibernation a bears body temperature drops, and they do not go to the bathroom. This helps them preserve energy as they sleep throughout the winter. Which is what keeps them alive. Hope I could help!!:-)))
C. It's nucleus can break apart.
If it's breaking apart, it's decaying in order to become more stable. Hope that helps!