how hot is the water

how hot is the water - How Hot is the Water CHM 113/AD...

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How Hot is the Water? CHM 113/AD Experiment #8 Group #4 1. Lauren Hayes 2. Kelsey Green 3. Joseph Repta 4. Eric Hughes
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Introduction: A hypothetical customer returned a coffee pot complaining that it didn’t boil the water to a high enough temperature. The goal was to determine how hot the water was with a thermometer that didn’t have any marks higher than 40 degrees Celsius. The principles of thermochemistry were applied to find out whether the water was hot enough to brew coffee. The following equation was used: q=mCΔT, where q is the measurement of heat energy in Joules, m is the mass of the substance, C is the specific heat of the substance, and ΔT is the change in temperature in degrees Celsius. Materials and Methods: A coffee pot was used to heat the water to an undetermined temperature above 40°C. Next, individual amounts of 1 mL of cold water were measure out and had their temperatures recorded. Ten mL of the hot water was poured into a Styrofoam cup and then covered with another cup to prevent heat loss to the environment. A thermometer was used to assure that the starting temperature of the hot water is above 40°C. Next, a single 1 mL sample of cold water was added and stirred into the 10 mL of hot water. A measurement of the temperature was then taken and recorded.
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how hot is the water - How Hot is the Water CHM 113/AD...

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