Specific heat capacity - heat energy transfer

In summary, specific heat capacity is the amount of heat energy required to raise the temperature of one unit mass of a substance by one degree Celsius. It differs from heat capacity in that it takes into account the mass of the substance. Factors such as molecular structure, density, and phase can affect the specific heat capacity of a substance. The specific heat capacity also plays a role in heat energy transfer, as materials with a higher specific heat capacity require more heat energy to increase their temperature. Specific heat capacity can be measured using a calorimeter or calculated using mass, temperature change, and heat energy measurements.
  • #1
slaw155
41
0

Homework Statement



Find the mass of water that vaporizes when 3.39 kg of mercury at 243 °C is added to 0.476 kg of water at 90.0 °

Homework Equations


q=mcT, q=mL


The Attempt at a Solution


When vaporising T=100degC. Heat lost by mercury = heat gained by water. 3.39kg x 139J/kg/C x (243-100) = 0.476kg x 4186J/kg/C x (100-10) + 22.6x10^5 J/kg x m
m= 2.1 x 10^-5kg is what I get which is the wrong answer. Where have I gone wrong?
 
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  • #2
Where did the 100-10 come from?

Chet
 

Related to Specific heat capacity - heat energy transfer

1. What is specific heat capacity?

Specific heat capacity is the amount of heat energy required to raise the temperature of one unit mass of a substance by one degree Celsius. It is a measure of how much energy a material can hold before its temperature increases.

2. How is specific heat capacity different from heat capacity?

Specific heat capacity is the amount of heat energy required to raise the temperature of one unit mass of a substance by one degree Celsius, while heat capacity is the amount of heat energy required to raise the temperature of a given object by one degree Celsius. Specific heat capacity takes into account the mass of the substance, while heat capacity does not.

3. What factors affect the specific heat capacity of a substance?

The specific heat capacity of a substance is affected by its molecular structure, density, and phase (solid, liquid, or gas). It can also vary with temperature and pressure.

4. How does specific heat capacity affect heat energy transfer?

The specific heat capacity of a substance determines how much heat energy is required to raise its temperature. Materials with a higher specific heat capacity require more heat energy to increase their temperature, while materials with a lower specific heat capacity require less heat energy. This affects how quickly heat energy is transferred from one object to another.

5. How is specific heat capacity measured?

Specific heat capacity is typically measured using a calorimeter, which is a device that can accurately measure the heat exchange between two substances. The specific heat capacity of a substance can also be calculated by measuring its mass, temperature change, and the amount of heat energy added or removed.

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