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andre [41]
2 years ago
8

How much heat energy is required to raise the temperature of 15g of silver from 25°C to 55°C, assuming the specific heat of silv

er
is 0. 24 J/gºC?

30

108

15 J

115 J
Chemistry
1 answer:
Alenkasestr [34]2 years ago
6 0

Answer:

108 j

Explanation:

.24 j/g-C  * 15 g * (55-25) =

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Answer:

1255.4L

Explanation:

Given parameters:

P₁  = 928kpa

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T₂  = 32°C

Unknown:

V₂  = ?

Solution:

The combined gas law application to this problem can help us solve it. It is mathematically expressed as;

           \frac{P_{1} V_{1} }{T_{1} }   = \frac{P_{2} V_{2} }{T_{2} }

P, V and T are pressure, volume and temperature

where 1 and 2 are initial and final states.

Now,

 take the units to the appropriate ones;

             kpa to atm,  °C to K

P₂ = 319kpa in atm gives 3.15atm

P₁  = 928kpa gives 9.16atm

T₂  = 32°C gives 273 + 32  = 305K

T₁  = 129°C gives 129 + 273  = 402K

Input the values in the equation and solve for V₂;

        \frac{9.16  x 569}{402}   = \frac{3.15 x V_{2} }{305}

       V₂   = 1255.4L

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