The assertion is definitely wrong. Corrosion actually means decomposing or rusting of metals. So, corrosion is a harmful process for metals. But, your reason is correct. Galvanising, which means deposition of a layer of zinc on iron to prevent from rusting, is a very beneficial process to prevent metals from corrosion. In some cases, electroplating also helps to prevent from corrosion.
Hope it helps
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Answer:
2.123x10⁻⁴ M (mol/L)
Explanation:
First, we are considering the molar mass for each element, a data we obtain from the periodic table:
Ca= 40
S= 32
O= 16
Then, for CaSO₄, the molecular mass is 136 g per mol
As we dissolve 0.00101 g of this salt, we are going to convert this mass in moles units:
1 mol CaSO₄=136 g → 0.0101 g=7.43x10⁻⁵ mol
We finally obtain the concentration for the 350 ml, having in mind that it should be in mol/L:
350ml=7.43x10⁻⁵ mol
1000ml (1L)=2.123x10⁻⁴ M , where M=mol/L
