The order of increasing wavelength (and decreasing energy) of the given radiations is:
Gamma Rays > X-Rays > Visible Light > Radio waves
X-rays due to the short wavelength and higher energies have the ability to penetrate through soft tissues like the skin or get absorbed by hard tissues like the bones. Thus, when the human anatomy is exposed to X-rays, bones appear white whereas the skin/tissues appear gray.
Ans: A) X-rays are used by doctors to view skeletal structures
The flavoring is what seems to appeal to underage users and it’s what makes vaping seem harmless
Citric acid is not harmful to the body
Answer:
Within a group trend
Explanation:
The atomic radius of atoms generally increases from top to bottom within a group trend. As the atomic number increases down a group, there is again an increase in the positive nuclear charge. As the atomic number increases within a period, the atomic radius decreases.
Answer: The enthalpy change during this reaction is 77505.56 J.
Explanation:
Given: 
, 
Mass = 254 g, Specific heat = 
Formula used to calculate the enthalpy change is as follows.
where,
q = enthalpy change
m = mass of substance
C = specific heat capacity
= initial temperature
= final temperature
Substitute the values into above formula as follows.
Thus, we can conclude that the enthalpy change during this reaction is 77505.56 J.
