Answer:
Explanation:
Given data:
one side wall temperature 200°C
other side wall temperature 10°C
h = 100 W/m^2 °C
k = 2.6W/m °C
wall thickness L = 30 cm
we know that heat flux is given as
solving for temperature for cold surface is given as
By looking it up on the periodic table
This for health and hazard purposes. The conventional thermometers contain mercury which is very dangerous to health. It is toxic which could cause poisoning, respiratory damage and kidney problems. Because of this, it is already illegal to use them for safety purposes. Temperature probes are much safer because they only use thermocouples.
Answer:
you are right
Explanation:
and i do not need to explain it because you did
Answer:
The correct answer is - sulfur.
Explanation:
In the periodic table, there are 18 groups and 7 rows or periods arranged according to their atomic number or electronic configuration. In the question, it is mentioned that the desired element atomic mass is less than the atomic mass of the selenium which is 78.96, and more than oxygen which is 15.99 with 6 electron valence and present in the third row.
As it has 6 valency of electron it must be in the 16 group of the table that comprises the 6 valency and as it is located in the 3rd row it must be sulfur that also has an atomic mass between selenium and oxygen.
