How many carbon atoms are in 12.01 grams of pure carbon?

Chemistry

1 answer:

natulia [17]3 years ago

8 0

It contains exactly 6.022 * 10^23, the answer is D

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$\Delta H^o_{rxn}=\sum [n\times \Delta H_f_{(product)}]-\sum [n\times \Delta H_f_{(reactant)}]$

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$\Delta H_{rxn}=[(3\times (-74.8))+(1\times (-393.5))+(4\times (-46.1))]-[(4\times (-22.97))+(2\times (-285.8))]\\\\\Delta H_{rxn}=-138.82kJ$

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