<span>Water soaks into it easily and during freeze-thaw cycles would be more likely to break apart because of the water freezing and thawing inside the rock. The water freezes and expands inside the rock, causing the surface to break off in flakes from the pressure of the expanding ice inside.</span>
Answer:
1. 3.29mol
2. 0.125molH2o/mol
3. 52.5'C
Explanation: The step by step explanation are attached to the answer.
Answer:
Mass of Fe produced = 4.468 g
Explanation:
Given data:
Mass of Fe produced = ?
Mass of Fe₂O₃ react = 6.50 g
Solution:
Chemical equation:
2Fe₂O₃ → 4Fe + 3O₂
Number of moles of Fe₂O₃ ;
Number of moles = mass/molar mass
Number of moles = 6.50 g/159.69 g/mol
Number of moles = 0.04 mol
Now we will compare the moles of iron and ironoxide.
Fe₂O₃ : Fe
2 : 4
0.04 : 4/2×0.04 = 0.08 mol
Mass of iron produced:
Mass = number of moles × molar mass
Mass = 0.08 mol × 55.85 g/mol
Mass = 4.468 g
Answer:
Balanced equation: 
The coefficient of water is 8
Explanation:
Oxidation: 
Balance O and H in basic medium: 
Balance charge: 
......(1)
Reduction: 
Balance O and H in basic medium: 
Balance charge: 
.....(2)
![[2\times equation(1)]+[3\times equation(2)]:](https://tex.z-dn.net/?f=%5B2%5Ctimes%20equation%281%29%5D%2B%5B3%5Ctimes%20equation%282%29%5D%3A)
The coefficient of water is 8.
