What are the formulas for calculating specific heat capacity?

Specific heat capacity. is a physical quantity that represents the thermal properties of a substance. It is usually denoted by the symbol c.

If an object with mass m absorbs (or emits out) heat in a certain process, and the temperature increases (or decreases) δt, then δq δt is called the heat capacity of the object in this process.

Referred to as heat capacity), it is denoted by c, that is, c = δq δt. Divide the heat capacity by the mass to obtain the specific heat capacity c=c m=δq mδt. For the heat capacity and specific heat capacity of the lifting and destruction of the micro process, there are c=dq dt, c=1 m*dq dt, respectively.

Therefore, in the finite process of the temperature change from t1 to t2, the heat absorbed (or released) q = (t2,t1)cdt = m (t2,t1)cdt. In general, the heat capacity and specific heat capacity are both functions of temperature, but when the temperature variation range is not too large, they can be approximated as constants. So there is q=c(t2-t1)=mc(t2-t1).

If the temperature change is δt=t2-t1, then q=cmδt. This is the basic formula for calculating heat in secondary schools using specific heat capacity. The formula for calculating the amount of heat associated with specific heat.

q=cmδt, i.e., q absorbs (releases) = cm(t-t1) where c is the specific heat, m is the mass, t is the final temperature, t1 is the initial temperature, and q is the energy. When it is endothermic, it is Q=cmδt liter (the actual raised temperature is used to reduce the initial temperature of the object), and when it is exothermic, it is Q=cmδt (the actual initial temperature is used to reduce the temperature after the drop). Or q=cmδt=cm (end of t - beginning of t), q>0 is endothermic and q<0 is exothermic.

Specific heat capacity of the mixture: weighted average.

Calculation: c= c m=(m1c1+m2c2+m3c3+....)m1+m2+m3+…The specific heat capacity of a gas is defined: cp

The heat capacity when the pressure is unchanged and the temperature changes with the volume, cp=dh dt, h is the enthalpy. cv

The heat capacity when the volume is unchanged and the temperature changes with the pressure, CV=du dt, and U is the internal energy. When the temperature of the gas is t and the pressure is p, the specific heat capacity of the gas when the heat dq is provided: cp*m*dt=cv*m*dt+pdv; where dt is the temperature change and dv is the volume change.

Specific heat capacity: For those with f degrees of freedom.

of gases. And the molar specific heat capacity is: cv,m=r*f2 cv=rs*f2 r= Meyer's formula:

cp=cv+r specific heat capacity ratio: =cp cv multi-party specific heat capacity: cn=cv-r (n-1)=cv*( n) (1-n) For both solid and liquid, the specific heat capacity cp can be measured by the specific constant pressure heat capacity, i.e.:

C=cp (measured with a defined method for c=dq mdt). Dulong-Petit Rule:

There is a simple rule that all metals have a fixed one within a certain temperature range.

cp 25j (mol·k) so cp=25 m, where m is the molar mass.

Specific heat capacity unit j (mol·k). Hopefully, thank you.

q is the heat absorbed (or released); c is the specific heat capacity of the substance; m is the mass of the object, and δt is the amount of change in temperature after absorption (or exothermic).

Specific heat capacity refers to the amount of heat required to increase the temperature of a certain amount of homogeneous substance by 1k in the absence of phase change and chemical change.

Common units: j (kg· )j (g· )kj (kg· )cal (kg· )kcal (kg· )etc. Pay attention to Celsius and Kelvin.

It differs only in the representation of the temperature scale, which is equivalent in the sense of the magnitude of the temperature difference, so that and k in these units can be arbitrarily substituted with each other. For example, "joules per kilogram Celsius" and "joules per kilogram open" are equivalent.

Specific heat capacity is a physical quantity that represents the thermal properties of a substance. It is usually denoted by the symbol c. If an object with mass m absorbs (or releases) heat δq in a certain process, and the temperature rises (or decreases) δt, then δq δt is called the heat capacity of the object in this process (referred to as heat capacity), which is represented by c, that is, c = δq δt

Divide the heat capacity by the mass to obtain the specific heat capacity c=c m=δq mδt. For the heat capacity and specific heat capacity of the micro process, there are c=dq dt, c=1 m*dq dt., respectivelyTherefore, in the finite process of the temperature change from t1 to t2, the heat absorbed (or released) q = (t2,t1)cdt = m (t2,t1)cdt.

In general, the heat capacity and specific heat capacity are both functions of temperature, but when the temperature variation range is not too large, they can be approximated as constants. So there is q=c(t2-t1)=mc(t2-t1). If the temperature change of cherry blossom is δt=t2-t1, then there is q=cmδt

This is the basic formula for calculating heat in secondary schools using specific heat capacity. The formula for calculating the heat related to specific heat is: Q = cmδt i.e. q absorption (discharge) = cm (t-t1) where c is the specific heat, m is the mass, t is the final temperature, t1 is the initial temperature, and q is the energy.

When it is endothermic, it is Q=cmδT liter (the initial temperature of the object is reduced by the actual raised temperature), and when it is exothermic, it is Q=cmδt (the actual initial temperature is reduced by the actual initial temperature).or q=cmδt=cm (end of t - beginning of t), q>0 is endothermy, q

q=cm△t

q represents heat, c represents specific heat capacity, m represents mass, t represents the change of temperature volume, and q, absorption=cm(t-t0).

q Suction represents the heat absorbed, c represents the specific heat capacity, m represents the mass, t represents the final temperature, and t0 represents the initial temperature of the state.

q amp = cm (t0-t).

Q discharge represents the heat emitted c represents the specific heat capacity imitation m represents the mass t represents the end temperature t0 represents the initial temperature [if your problem is solved, please set it to praise, if you are not satisfied with me, the happiest is to be able to help you].

The calculation formula of Bire Wu Jin Liang Rong is generally as follows: Q suction = cm (t-to) q release = cm (to-t). c denotes the specific heat capacity. m denotes the mass of the object.

to indicates the initial temperature of the object. t denotes the final temperature of the object. (△t:

Object Changing Temperature, i.e., t-t0) can be derived by analogy using the concept of specific heat capacity, which represents the amount of heat required to transport 1 mol of material in a cavity to rise by 1k.

The definition of specific heat capacity refers to the ratio of the heat absorbed (or released) by the mass of a certain substance to the product of its mass and increase (or decrease) temperature of a certain mass when the temperature of a certain mass rises (or decreases). It is calculated as follows:

c=q/mδt。

The formula for calculating the specific heat capacity is generally as follows:

Q Suction = cm (T-To) Q Discharge = cm (To-T).

c denotes the specific heat capacity.

m denotes the mass of the object.

to indicates the initial temperature of the object.

t denotes the final temperature of the object.

t: The temperature of the object changes, i.e., t-t0).

Using the concept of specific heat capacity, it is possible to deduce a molar heat capacity that represents the amount of heat required to raise 1 k of a mol of substance.

c=q/m·△t。

1. The concept of specific heat capacity.

The ratio of the heat absorbed by a certain mass of a certain substance when the temperature rises to the product of its mass and the increased temperature is called the specific heat capacity of the substance.

The above inverse process is also valid. That is, the ratio of the heat emitted by a certain substance when the temperature decreases to the product of its mass and the reduced temperature of a certain substance is called the specific heat capacity of the substance.

Definition of specific heat capacity: c=q (m t); In the above formula, q is the heat, c is the specific heat capacity, m is the mass of the object, and t is the temperature difference.

The specific heat capacity is measured in coules per kilogram of Celsius and the symbol is j (kg).

2. Derivation of the specific heat capacity formula.

Definition of specific heat capacity: c=q (m t); It can be deduced that m= q c t; q=cm△t =cm(t1-t0)。

Note: T1 is high temperature; t0 is low temperature.

t1= t0+q /cm；t0= t1-q /cm。

3. Experiment: compare the endothermic absorption of different substances.

Electric heaters, glasses, thermometers of the same specification. Heat water and cooking oil of the same quality so that both substances rise to the same temperature and compare how much heat they absorb.

Conclusion: Different substances absorb different amounts of heat when they have the same mass and the same elevated temperature.