Help banget yahh kak pliss mau gercep

<p>Jawaban &nbsp;<strong>-510 kJ</strong></p><p>&nbsp;</p><p><strong>Pembahasan&nbsp;</strong></p><p>&nbsp;</p><p>Persamaan reaksi termokimia yg terjadi:</p><p>&nbsp;</p><p>C3H8 ——&gt; 3 C + 4 H2 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;ΔH= 20 kJ</p><p>3 C + 3 O2 ——&gt; 3 CO2 &nbsp; &nbsp; &nbsp; &nbsp; ΔH= 3× -90 kJ</p><p>4 H2 + 2 O2 ——&gt; 4 H2O &nbsp; &nbsp; &nbsp;ΔH= 2× -130</p><p>___________________________________+</p><p>C3H8 + 5 O2 ——&gt; 3 CO2 + 4 H2O &nbsp; ΔHreaksi</p><p>&nbsp;</p><p>ΔHreaksi: 20 + (-270) + (-260) = &nbsp;-510 kJ</p>