How does the Law of Conservation of Mass relate to changes in physical state? How does it relate to chemical changes?

1 answer:

8 0

The law of conversation of mass states that you cant create or destroy matter.By applying these to chemical changes, it implies that the left hand side of the reaction must balance with the right hand side of the reaction equation as you can neither create nor destroy atoms. this gives us a powerful tool to predict chemical reactions and the overall stoichiometrey
of chemical reactions

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Consider the reaction 2CO * O2 —> 2 CO2 what is the percent yield of carbon dioxide (MW= 44g/mol) of the reaction of 10g of c

Arturiano [62]

Answer:

Y = 62.5%

Explanation:

Hello there!

In this case, for the given chemical reaction whereby carbon dioxide is produced in excess oxygen, it is firstly necessary to calculate the theoretical yield of the former throughout the reacted 10 grams of carbon monoxide:

$m_{CO_2}^{theoretical}=10gCO*\frac{1molCO}{28gCO}*\frac{2molCO_2}{2molCO} *\frac{44gCO_2}{1molCO_2}\\\\ m_{CO_2}^{theoretical}=16gCO_2$

Finally, given the actual yield of the CO2-product, we can calculate the percent yield as shown below:

$Y=\frac{10g}{16g} *100\%\\\\Y=62.5\%$

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Explanation:

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