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Stearic acid `[CH_(3)(CH_(2))_(16)CO_(2)H]` is a fatty acid the part of fat that stores most of the energy .1.0 g of Stearic acid was burnt in a bomb calorimeter . The bomb had capacity of 652 `J//^(@)C`. If the temperature of 500 g water rose from 25.0 to `39.3^(@)C` how much heat is released when the stearic acid was burned? `["Given "C_(p)(H_(2)O)=4.18J//g^(@)c]`A. 39.21 kJB. 29.91 kJC. 108 kJD. 9.32 kJ |
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Answer» Correct Answer - A `-q_("reaction")=q_("bomb")+q_("water")` `q_("reaction")=(C("bomb")+(m_("water")xxc))DeltaT` `=(652 + 500 xx 4.18 )xx14.3` `=39210 " J or "39.21" kJ"` |
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