[mage lang=”en|fr|de|en” source=”flickr”]specific heat problems worksheet[/mage]
Chemistry Energy Problem help please?

This is my energy problem worksheet problem
i have the answer that teacher gave me, but i can’t seem to get how to do it
could you please show work to this? thanks ^^

Carbon has the highest melting point (3620 Degrees Celcius) of any element and a specific heat of 0.7099 J/g*Celcius. Tungsten has a specific heat of 0.1320 J/g*Celcius. An 11.2 g sample of carbon is heated to its melting point and allowed to radiate heat to a 165.3 g sample of tungsten. The initial temperature of the tungsten is 31.0 Degrees Celcius. How many Celcius degrees will the temperature of the tungsten sample increase?

Changes of Temperature

The amount of heat energy, ΔQ, required to change the temperature of a
material from an initial temperature, T0, to a final temperature, Tf depends
on the heat capacity of that material according to the relationship:

[Delta Q = int_{T_0}^{T_f}C_p,dT]

The heat capacity is dependent on both the amount of material that is
exchanging heat and its properties. The heat capacity can be broken up in
several different ways. First of all, it can be represented as a product of
mass and specific heat capacity (more commonly called specific heat):

Cp = m cs

or the number of moles and the molar heat capacity:

Cp = n cmolar

Both the molar and specific heat capacities only depend upon the physical
properties of the substance being heated, not on any specific properties of
the sample. The above definitions of heat capacity only work approximately
for solids and liquids, but for gases they don’t work at all most of the
time. The molar heat capacity can be “patched up” if the changes of
temperature occur at either a constant volume or constant pressure.
Otherwise, it’s generally easiest to use the first law of thermodynamics in
combination with an equation relating the internal energy of the gas to its
temperature.
As mentioned previously, heat tends to move from a high temperature region
to a low temperature region. This heat transfer may occur by any of three
mechanisms, conduction, convection, and radiation.

Conduction is the most common means of heat transfer in a solid. On a
microscopic scale, conduction occurs as hot, rapidly moving or vibrating
atoms and molecules interact with neighboring atoms and molecules,
transferring some of their energy (heat) to these neighboring atoms.

Convection is usually the dominant form of heat transfer in liquids and
gases. In convection, heat transfer occurs by the movement of hot or cold
portions of the fluid. For example, when water is heated on a stove, hot
water from the bottom of the pan rises, heating the water at the top of the
pan. Two types of convection are commonly distinguished, free convection, in
which gravity and buoyancy forces drive the fluid movement, and forced
convection, where a fan, stirrer, or other means is used to move the fluid.

Radiation is the final means of heat transfer. Radiative heat transfer is
the only form of heat transfer that can occur in the absence of any form of
medium and as such is the only means of heat transfer through a vacuum.
Thermal radiation is a direct result of the movements of atoms and molecules
in a material. Since these atoms and molecules are composed of charged
particles (protons and electrons), their movements result in the emission of
electromagnetic radiation, which carries energy away from the surface. At
the same time, the surface is constantly bombarded by radiation from the
surroundings, resulting in the transfer of energy to the surface. Since the
amount of emitted radiation increases with increasing temperature, a net
transfer of energy from higher temperatures to lower temperatures results.

hope this helps without aswering your homework for you.

Energy and specific heat 1