3 years ago

The elements on the Periodic Table are arranged in order of increasing

1 answer:

Nookie1986 [14]3 years ago

6 0

The elements on the Periodic Table are arranged in order of increasing "Atomic number"

In short, Your Answer would be Option B

Hope this helps!

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My sporty mini van needs 19,126 kJ of energy in order to pass a fast moving street sweeper on the road. Using the following equa

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Explanation:

Hello there!

In this case, according to the given chemical reaction, we can set up the heat of reaction per mole of gasoline as shown below:

$\Delta H=\frac{-10,990kJ}{2molC_8H_{18}}=-5495\frac{kJ}{molC_8H_{18}}$

Now, since the total heat is obtained by multiplying the moles and heat of reaction, we can calculate the moles as shown below:

$n=\frac{Q}{-\Delta H } \\\\n=\frac{19,126kJ}{-(-5495\frac{kJ}{molC_8H_{18}} )} \\\\n=3.48molC_8H_{18}}$

Finally, since the molar mass of gasoline is 114.22 g/mol, we can easily calculate the mass as follows:

$m=3.48molC_8H_{18}} *\frac{114.22gC_8H_{18} }{1molmolC_8H_{18}} } \\\\m=397.6gC_8H_{18}}$

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