Fresh snow has the Earth's highest albedo at 0.95. Albedo is a measure of reflectivity. Fresh snow reflects approximately 95 percent of the sun's rays.
Albedo has an effect on temperature. Substances with high albedo will have cooler temperatures. Substances with lower albedo absorb the rays of the sun and have higher temperatures. Asphalt has a very low albedo. This is why it can burn people's feet when they walk on it in the summer. The temperature of many cities is higher than normal due to the presence of surfaces with low albedo. This is known as the "urban heat island effect."Learn More
Absolute zero is the coldest possible temperature, at which no heat is left in a substance and its particles display no motion whatsoever. Absolute zero is equal to 0 K on the Kelvin scale, which is equivalent to negative 273.15 degrees Celsius or negative 459.67 degrees Fahrenheit.Full Answer >
To calculate the adiabatic flame temperature of a substance, measure the substance's molar mass and its initial temperature. Calculate the heat of the reaction at 25 degrees Celsius to find the final adiabatic flame temperature.Full Answer >
The heat change of fusion, or "delta H" of fusion, is determined by taking the number of moles of a substance and multiplying it by the molar heat of the substance. The equation is "?H = n?Hfus," where "n" is the number of moles.Full Answer >
Molar entropy denotes the entropy content of one mole of any substance. When entropy content is measured for each mole at steady state (298 K temperature), it is referred to as standard molar entropy.Full Answer >