An object with a mass of $18 g$ is dropped into $240 mL$ of water at $0^@C$ . If the object cools by $120 ^@C$ and the water warms by $6 ^@C$ , what is the specific heat of the material that the object is made of?

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An object with a mass of $18 g$ is dropped into $240 mL$ of water at $0^@C$ . If the object cools by $120 ^@C$ and the water warms by $6 ^@C$ , what is the specific heat of the material that the object is made of?

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Answer 1 · 2016-02-05T14:54:21

$"a"$ ) $c_o=0,0 bar 1$ $" specific heat of material"$
$"b"$ ) $"material may be made of iron"$

Explanation:

$"heat taken by water is:" Q_t=m_w.c_w. Delta t$
$"240 m L of water is 240 mg =0,24 g" " "c_w=1"$
$Q_t=0,24.1.(10-0)=2,4 Cal$
$" heat given by object is:"Q_o=m_o . c_o . Delta t_o$
$Q_o=18 . c_o .120=c_o .2160$
$c_o .2160=2,4$
$c_o=(2,4)/2160$
$"a"$ ) $c_o=0,0 bar 1$ $" specific heat of material"$
$"b"$ ) $"material may be made of iron"$

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An object with a mass of $18 g$ is dropped into $240 mL$ of water at $0^@C$ . If the object cools by $120 ^@C$ and the water warms by $6 ^@C$ , what is the specific heat of the material that the object is made of?

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An object with a mass of 18 g18 g is dropped into 240 mL240 mL of water at 0^@C0^@C. If the object cools by 120 ^@C120 ^@C and the water warms by 6 ^@C6 ^@C, what is the specific heat of the material that the object is made of?

1 Answer

Explanation:

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An object with a mass of $18 g$ is dropped into $240 mL$ of water at $0^@C$ . If the object cools by $120 ^@C$ and the water warms by $6 ^@C$ , what is the specific heat of the material that the object is made of?