Chemistry

Chemistry, 11.11.2019 17:31, kathyc53

Propose a distinguishing test between oxygen and carbon(iv)oxide

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In the reaction at blood falls, iron and oxygen combine to form iron oxide, which is called rust (water is also present). the reactants are , a] oxygen and iron oxide b] iron ad iron oxide c] oxygen and iron and the product is a] iron b] oxygen c] iron oxide. i need answers to boh blanks .

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Which of the following is the correct word equation for the reaction described below? mercury(ii) oxide breaks down when it is heated to form oxygen gas and liquid mercury. a)oxygen gas + mercury → mercury(ii) oxide b)mercury(ii) oxide + oxygen → mercury c)mercury → mercury(ii) oxide + oxygen d)mercury(ii) oxide → oxygen + mercury

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The anion formed from an oxygen atom is called a(n) a. oxygen ion. c. carbon dioxide. b. oxide ion. d. nitrous oxide.

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Chemistry, 19.10.2019 08:30, JvGaming2001

Which is a pair of allotropes? a. carbon-14 and carbon-12 b. diamond and carbon dioxide c. iron(iii) oxide and iron(ii) oxide d. molecular oxygen and ozone

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