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What is used to find the specific heat capacity of a substance?
The equation for specific heat is: C = q/temp. change x mass. C is a substance's specific heat, which is a constant for every substance. q is its heat capacity in joules, temp. change is the change in temperature in degrees Celsius, and mass is in grams.
What is the difference between dependent variable and independent variable?
a dependent variable is something that you cannot change but comes out as a result/an independent variable is something that you change in your experiment like the temperature of something or the amount of something
Suppose you want to heat 40kg of water by 20 deg C How many Joules of heat are required?
You would use the equation ΔQ = mcΔT, where ΔQ means change in energy (or energy required in this case), m is mass of water, c is specific heat capacity, and ΔT change in temperature. Water's specific heat capacity (energy needed to raise 1kg by 1 degree K or C) is 4200J Kg-1 K-1, so, if we put your numbers in: Q = 40kg x 4200J Kg-1 K-1 x 20°C (20 degress kelvin)Q = 3360000J, or, 3360KJ, or 3.36MJ of energy. This is assuming that the temperature change does not get the water to boil, as then you have to factor in the latent heat of vapourisation...
How much heat engery is required to raise the temperature of 5 kilograms of coal from 20 c to220 c?
The amount of heat energy (q) gained or lost by a substance is equal to the mass of the substance (m) multiplied by its specific heat capacity (Cg) multiplied by the change in temperature (final temperature - initial temperature) q = m x Cg x (Tf - Ti)q is what we are finding.m of coal = 5 kgCg of coal (anthracite) = 1.38 kJ/kg-K (kilojoules per kilogram-Kelvin)Tf = 220 °C.Ti = 20 °C.using the data above.q = m x Cg x (Tf - Ti)q = 5 x 1.38 x (220 - 20) -- temperature change same in K or °Cq = 5 x 1.38 x 200q = 1380 kilo-joules(kj) or 1.3 x 106 joules---The formula isQ=m*c*(T2-T1)Energy=mass*specific heat capacity*( temperature higher - temperature lower)(assuming the volume of your substance doesn't change during the heating)Energy Required = Mass x "Specific Heat Capacity" x Temperature changeFor anthracite coal, the specific heat is 1.38 kJ / kgK , yielding E = 1.38 (5kg)(200K) = 1380 kJ.
Calculate the amount of heat liberated in kJ from 403 g of mercury when it cools from 67.0C to 11.0C?
Heat = mass * heat capacity * change in temperature if we assume that heat capacity is constant (it isn't really, it changes with temperature, but for a change in temperature of only 56 C it isn't worth looking at), then we can find it to be approximately 140 J/kg.K (from www.allmeasures.com). Heat = 0.403kg * 140 J/kg.C * 56 C Heat = 3159.52 J Heat = 3.159 kJ
What factor most influence the amount of energy needed to change the temperature of a substance?
specific heat capacity
What is the relationship between the change in enthalpy (H), specific heat capacity (Cp), and temperature change (T) in a system?
The relationship between the change in enthalpy (H), specific heat capacity (Cp), and temperature change (T) in a system is described by the equation H Cp T. This equation shows that the change in enthalpy is directly proportional to the specific heat capacity and the temperature change in the system.
What term describes how much energy it takes to change the temperature of the substance?
specific heat capacity
What is the relationship between the change in enthalpy (H), specific heat capacity (Cp), and the change in temperature (T) in a chemical reaction or physical process?
The relationship between the change in enthalpy (H), specific heat capacity (Cp), and the change in temperature (T) in a chemical reaction or physical process is described by the equation H Cp T. This equation shows that the change in enthalpy is directly proportional to the specific heat capacity and the change in temperature.
What is the heat capacity equation and how is it used to calculate the amount of heat required to change the temperature of a substance?
The heat capacity equation is Q mcT, where Q represents the amount of heat energy, m is the mass of the substance, c is the specific heat capacity of the substance, and T is the change in temperature. This equation is used to calculate the amount of heat required to change the temperature of a substance by multiplying the mass, specific heat capacity, and temperature change.
What is the relationship between heat transfer (h), specific heat capacity (c), and temperature change (delta T)?
The relationship between heat transfer (h), specific heat capacity (c), and temperature change (T) is described by the equation: h c T. This equation shows that the amount of heat transferred is directly proportional to the specific heat capacity of the material and the temperature change.
How do you caluculate heat transfer?
(Mass) x (Specific Heat Capacity)*(change in temperature)
How to calculate the change in thermal energy in a system?
To calculate the change in thermal energy in a system, you can use the formula: Change in thermal energy mass x specific heat capacity x change in temperature. This formula takes into account the mass of the system, the specific heat capacity of the material, and the change in temperature.
For the specific heat capacity equation q equals m x C x Δt does change in temperature always have to be positive?
No, the change in temperature does not always have to be positive in the specific heat capacity equation. It can be positive if the temperature increases or negative if the temperature decreases. The sign of the change in temperature (Δt) will depend on whether heat is being added or removed from the system.
What is used to find the specific heat capacity of a substance?
The equation for specific heat is: C = q/temp. change x mass. C is a substance's specific heat, which is a constant for every substance. q is its heat capacity in joules, temp. change is the change in temperature in degrees Celsius, and mass is in grams.
What is the formula for calculating the change in temperature (T) using the specific heat capacity (c) and the mass (m) of a substance, expressed as mcT?
The formula for calculating the change in temperature (T) using the specific heat capacity (c) and the mass (m) of a substance is mcT.
What is specific heat capacity?
Is the amount of energy that is required to change the temperature of 1kg of a substance by 1 degree Celsius with no state change.
