3 years ago

1.

Chemistry

2 answers:

fiasKO [112]3 years ago

5 0

Answer:

1. They are mostly used to protect materials and prevent chemical reactions.

2.These are Groups

3. I guess it is Rows

elena-s [515]3 years ago

3 0

1. Noble gases are used protect materials and prevent chemical reactions.

2. Groups

3. Rows

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In this case, since the reaction between phosphorous and oxygen to form diphosphorous pentoxide is:

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Thus, since phosphorous is in excess and oxygen and diphosphorous pentoxide are in a 5/2:1 mole ratio, we can compute the maximum moles of product as shown below:

$n_{P_2O_5}^{max}=112 gO_2*\frac{1molO_2}{32.00gO_2}*\frac{1molP_2O_5}{5/2molO_2}\\\\ n_{P_2O_5}^{max}=1.4molP_2O_5$

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