Specific heat

polymers and the mixtures are investigated in terms of specific heat as well. The mixing of PVC and EVA are investigated because of the possible use of EVA as a plasticizer for PVC. The benefit of an EVA plasticizer would not having the need to introduce low molecular plasticizers [1]. This paper will explore the enthalpy of mixing found throughout the various mixtures and the indications of these values as well as the excess specific heats. Some applications of EVA as a plasticizer is also explored

on the lower side, comparatively. Which may be due to altitude, beaker absorption or heat lost to the atmosphere. C. What type of reaction is used in calorimetry? Calorimetry uses a combustion reaction. The reaction is either absorbed or released, usually in the form of heat. The measurement of the heat is known as calorimetry. Recording temperatures before and after are important in order to know how much heat is absorbed or released. D. What are the products of the reactions? CO2 and H2O are the

through vaporization. Also, the electrical energy transfer into thermal energy to heat up the water. The initial temperature of the aluminum cube was at 40°C and the water’s initial temperature was at 3°C and the final temperature after mixing the two together as at 11.5°C. It only took a small amount of thermal energy to increase the temperature of the aluminum cube to reach 40°C, because it has low specific heat, it heats up faster. When they mixed together, the a little amount of thermal energy that

Calorimetry Lab Introduction: As heat is released from an endothermic reaction, the heat is absorbed by another substance, as energy, in this case heat, cannot be created nor destroyed. Through calorimetry and enthalpy, the amount of energy absorbed by another substance can be measured using the equation q=mcΔT, with the amount of energy in Joules equaling the mass, specific heat, and temperature change of a substance, as in this experiment, with the heat released from the combustion of the potato

temperature change was then used to find the specific heat of the calorimeter. The same process was used in the second, third, and fourth reactions of hydrochloric acid and sodium hydroxide, ammonium chloride and sodium hydroxide, and ammonia and hydrochloric acid respectively in order to determine the heats of reaction. Chemical theories and concepts used in this experiment include

Heat Transfer Process Lab Report 1. A) Thermal equilibrium is a condition under which two substances which are in contact exchange no heat energy. B) A coffee cup calorimeter is used to measure the heat absorbed or released by the reaction or the enthalpy change during a reaction. The coffee cup calorimeter consists of a Styrofoam which serves as an insulator. Little transfer of heat takes place between the cup and the surrounding because everything within the cup and the actual cup us considered

Graph 1 Description: This graph compares the experimental and theoretical molar heats of combustion. The graph shows how the experimental molar heat of combustion is a scale less than the theoretical molar heat of combustion. The significance behind the scale of this graph where the experimental is lower that the theoretical, is how there is a pattern for which every fuel follows the same trend. Graph 2 Description: This graph on the other hand, shows a pattern between the scales of carbon lengths

There could have been many different sources of error. The main source of error was heat loss due to the hole in the lid of the coffee cup where the heat escaped through during the experimentation. This error had caused the heat to escape therefore lowering the amount of heat produced by the substance. So in order to reduce this error, the coffee cup should have been calibrated and the energy loss should have been added to the energy released for every single substance to find the actual amount of

exponentially, geothermal energy remains relatively small. Sadly the problem with geothermal energy isn’t one that can be easily changed. The reason geothermal power plants are so few and and far between is the overly specific circumstances that are needed to harness the underground heat; geothermal power plants require hydrological sites with naturally high temperatures of around 150 to 370, in the form of wells, hot water is then pumped out of these wells is then pumped out of these wells, into one

Abstract Currently, in the absence of federal regulations for the prevention of heat-related illness in the workplace, employers are encouraged to develop plans that include hydration, training, acclimatization periods for new employees, and alternating work patterns. Although these methods are documented to prevent or reduce the likelihood of a heat casualty event, they are less likely to consider truly adequate hydration behaviors. Additionally, much of the data that exists on human hydration status