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marshall27 [118]
2 years ago
14

Steel is the most commonly used metallic material. However, its annual loss due to corrosion is huge. Preventing metal corrosion

is a big issue in scientific research. The wrong description about metal corrosion below is
A. Steel corrodes more easily in
humid air than in dry air
B. Steel corrosion in reality is the
chemical change that takes place
when steel reacts with the
oxygen and water vapour in air.
C. Aluminium is more active than
the iron in steel. Therefore its
ability to resist corrosion is
weaker than steel.
D. Painting on the surface of steel
can prevent corrosion of the
steel.​
Chemistry
2 answers:
Fiesta28 [93]2 years ago
5 0

Answer:

d

Explanation:

elvis's do fhgffgcgxcycy

Stels [109]2 years ago
3 0
B
Jdjfjfbfbfhhrjrbfbvfudhvr
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Use ksp=4.87×10−17 to calculate the solubility of iron (ii) hydroxide in pure water in grams per 100.0 ml of solution. g
marysya [2.9K]
The ksp = 4.87 × 10^-17
Therefore; 4.87 ×10^-17 = [Fe2+][OH-]^2 = (X)(2X)^2 = 4X^3
Hence; 
 4x^3 =4.87 × 10^-17 
 x = 2.30 × 10^-6 M
therefore the molarity is 2.3 ×10^-6 M
Thus;
The mass of Fe(OH)2 in 100 ml of water, will be given by:
  = 2.30 × 10^-6 mol/L = 2.3 ×× 10^-5 mole/100 mL
 =  89.86 g/mol × 2.3 × 10^-6 × 0.100 = 2.07 × 10^-5 g
= 2.07 × 10^-5 g 
 = 2.07 × 10^-5 g
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