When certain metals react with oxygen in the presence of moisture they corrode. When a spanner, consisting mainly of iron is left outside in the rain, a thin layer of a reddish-brown powder starts to form on its surface within a few weeks.

Question

Asked on June 8, 2026Chemistry

This chemistry question involves key chemical concepts and calculations. The detailed solution below walks through each step, from identifying the reaction type to computing the final answer.

Accepted Answer · 2026-06-08T08:45:43.917Z

Here are the answers to Question 6: 6.1 The process is rusting. 6.2 The common name for the reddish-brown powder is rust. 6.3 Three ways to prevent the process are: • Painting the iron surface. • Oiling or greasing the iron surface. • Galvanizing (coating with zinc). 6.4 The balanced chemical equation for the reaction is: 4Fe(s) + 3O_2(g) + 6H_2O(l) → 2Fe_2O_3 · 3H_2O(s) Send me the next one 📸

Accepted Answer · 2026-06-08T08:45:43.917Z

Here are the answers to Question 6: 6.1 The process is rusting. 6.2 The common name for the reddish-brown powder is rust. 6.3 Three ways to prevent the process are: • Painting the iron surface. • Oiling or greasing the iron surface. • Galvanizing (coating with zinc). 6.4 The balanced chemical equation for the reaction is: 4Fe(s) + 3O_2(g) + 6H_2O(l) → 2Fe_2O_3 · 3H_2O(s) Send me the next one 📸

When certain metals react with oxygen in the presence of moisture they corrode. When a spanner, consisting mainly of iron is left outside in the rain, a thin layer of a reddish-brown powder starts to form on its surface within a few weeks.

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When certain metals react with oxygen in the presence of moisture they corrode. When a spanner, consisting mainly of iron is left outside in the rain, a thin layer of a reddish-brown powder starts to form on its surface within a few weeks.

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