How many mole ratio can be written for following reaction CH4 + 2 02 --> CO2 + 2 H2O

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6 invertible mole ratios (12 in total).

Explanation:

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In this case, according to the balanced chemical reaction, it is possible to realize that methane would have 1:2, 1:1 and 1:2 mole ratios with oxygen, carbon dioxide and water respectively, oxygen would have 2:1 and 2:2 mole ratios with carbon dioxide and water respectively and finally, there is a 1:2 mole ratio between carbon dioxide and water, therefore there are 6 mole ratios that we can use for any stoichiometric calculations.

By the way, this mole ratios can be inverted depending on the given amount and the required one.

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in 1783 cavendish was working with his hydrogen gas and found that when he burned it and condensed the vapor it was water. this was very significant since it disproved the greek theory of elements completely since water was not a simple substance but the product of two gases. it was lavoisier who hearing of the experiment gave cavendish's gas the name hydrogen ("water-producer") and added that hydrogen burned by combining with oxygen and that water was a hydrogen-oxygen combination.

explanation:

the answer is c i believe