An unknown metal of mass 192 g heated to a temperature of 100°c was immersed into a brass calorimeter of mass 128 g containing 240 g of water a temperature of 8.4°c calculate the specific heat of the unknown metal if water temperature stabilizes at 21.5°c(specific heat of brass is 394 J k |
|||

(a) |
1232 J kg |
(b) |
458 J kg |

(c) |
654 J kg |
(d) |
916 J kg |

An unknown metal of mass 192 g heated to a temperature of 100°c was immersed into a brass calorimeter of mass 128 g containing 240 g of water a temperature of 8.4°c calculate the specific heat of the unknown metal if water temperature stabilizes at 21.5°c(specific heat of brass is 394 J k |
|||

(a) |
1232 J kg |
(b) |
458 J kg |

(c) |
654 J kg |
(d) |
916 J kg |

1 Answer

127 votes

192×S×(100−21.5)

= 128×394×(21.5−8.4)+240×4200×(21.5−8.4)

⇒ S =916

127 votes

127