3 years ago

Which is an example of pure chemistry

1 answer:

5 0

Examples of pure substances include tin, sulfur, diamond, water, pure sugar, table salt and baking soda. Crystals, in general, are pure substances. Tin, sulfur, and diamond are examples of pure substances which are chemical elements. All elements are pure substances.

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Explanation:

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3 years ago

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Calcium hydride reacts with water to form calcium hydroxide (aqueous) and hydrogen gas. Write a balanced chemical equation for t

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$CaH_2(s) +2H_2O(l) \rightarrow Ca(OH)_2 (aq) + 2H_2 (g)$

Explanation:

$CaH_2(s) +H_2O(l) \rightarrow Ca(OH)_2 (aq) + H_2 (g)$

In this reaction, calcium is balanced in either side. No. of atoms of 'H' and 'O' are not balanced. To balance O atoms, multiply $H_2O$ by 2. Now the reaction becomes: