It tells you how much of one atom you have.
You did not include the list but F is fluorine. The first halogen.
So, you can expect that the other members of the same group (halogens, column 17 of the periodic table) exhibit similar chemical behavior (reactivity).
So, I am sure your list contains one or more of theses elements: Cl (chlorine), Br (bromine), and I (iodine).
All of them you can expect to also be reactive non metal.
When the engine's <em>operating speed increases</em> the temperature of the engine will also increase.
Given:
Automobile engines without a cooling system.
To find:
The affect on the temperature of the engine as its operating speed increases.
Solution:
The speed of the operating engine increases.
- As we know that kinetic energy of the object and motion of the object is directly proportional<em> </em>to each other.
<em>Velocity </em><em>of object </em><em>∝ Kinetic energy </em><em>of object...[i]</em>
- When the<em> kinetic energy</em> of the object increases the kinetic energy of the particles of the object also increases.
- And <em>kinetic energy</em> of the particles is directly linked to the <em>temperature </em>of the object.
<em>Kinetic energy</em><em> ∝ </em><em>Temperature </em><em>of object</em>...[ii]
From [i] and [ii] :
<em>Velocity </em><em>of object ∝ </em><em>Temperature </em><em>of an object</em>
- When the engine's operating speed increases it will increase the kinetic energy of its particles and with that increase, the increase in the temperature of the engine will be <em>observed</em>.
So, from this, we can conclude when the engine's operating speed increases the temperature of the engine will also increase.
Learn more about kinetic energy and temperature here:
brainly.com/question/2731193?referrer=searchResults