Answer:
a.) because your ankle is taking in cold energy from the cold pack
Explanation:
all of the other ones say heat, which is not applied in this question
The answer is A. Every action has an equal and opposite reaction
Answer:
A flame is defined as the gaseous part of the fire which is visible to us. A flame is created due to the high exothermic reaction.
Two types of flames based on the amount of oxygen available are:
- Non-luminous or blue flame: In this type of flame the amount of oxygen is sufficiently large and it gives blue flame. For example: flame of Gas stove.
- Luminous flame: In this type of flame, the oxygen availability id not sufficient for the complete combustion and left unburnt carbon particles that forms yellow light flame. For example: kerosene lamp.
Answer: There are 4 bonding electrons and 18 non-bonding electrons.
Explanation: To determine the number of bonding and non-bonding electrons, we will use lewis dot structure for the molecule 
Lewis dot structure is the structure in which the valence electrons around an atom is shown in a molecule. It also tells us about the number of bonds present between the two neighboring atoms.
Valence electrons of Fluorine = 7
Valence electrons of Xenon = 8
In 
Total number of valence electrons = [(1 × 8) + (2 × 7)] = 22 electrons
From, the structure attached below, the number of bonds present = 2. Hence, the bonding electrons will be = 4 electrons
- Number of non - bonding electrons = Total valence electrons - Number of bonding electrons
Number of non-bonding electrons = 22 - 4 = 18