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Anna35 [415]
3 years ago
9

There are seven major levels of classification. Kingdom and Phylum are just two of the levels. Which of the following are also m

ajor levels of classification?
Choose all answers that are correct.

A.Class

B.Order

C.Family

D.Level
Chemistry
1 answer:
kumpel [21]3 years ago
7 0
A) The class and C) Family would be the only accurate option. Here are the levels from largest to smallest: <span>kingdom, phylum, class, order, family, genus and species.</span>
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In this case, we can consider that the given heat of combustion is indeed the heat of reaction since it corresponds to the combustion of propane, which is computed by using the heat formation of all the involved species as shown below:

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\Delta _fH_{C_3H_8}=3*\Delta _fH_{CO_2}+4*\Delta _fH_{H_2O}-5*\Delta _fH_{O_2}-\Delta _cH\\\\\Delta _fH_{C_3H_8}=3*(-393.5)+4*(-241.8)-5*0-(-2045)\\\\\Delta _fH_{C_3H_8}=-102.7kJ/mol

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