Answer:
Boiling point is the temperature at which a substance changes from liquid → gas. Scientists determine melting or boiling point by heating a small sample of the substance, keeping careful track of the temperature the entire time. When they see a solid melt, they record the temperature as the melting point.
Supose the material of the skillet is iron.
The specific heat constant for iron is:
Since the unit of measurement for the specific heat constant is Joules per kilogram Kelvin, we transform the temperatures from degrees Celsius to degrees Kelvin:
T1 = 12 °C = 273.15 + 12 = 285.15 K
T2 = 84 °C = 273.15 + 84 = 357.15 K
We also convert the mass from grams to kilograms:
m = 46 g = 0.046 kg
The amount of heat absorbed by the skillet is:
Replacing the above values, we get:
The answer is 1557 J (joules) or 1.557 kJ (kilojoules).
If the material is aluminium, use the specific heat of aluminium in your calculation, which is:
Gel electrophoresis is a method used for the separation of DNA fragments based on their sizes. We have labelled the steps and you can know the sequence of the steps by going through attached image.
The technique is very important for the molecular analysis and identification of new genes. It is also useful in identification of genetic sequence of a particular gene.
Hope it helps!
Answer:
Pulse is usually taken in the radial
artery in your wrist