Atomic number, atomic mass, symbol of element
Its an inelastic collision because the force from the bat causes it to bounce back. It is also an elastic force because catching the ball call for the energy of the ball to be deformed and restored into the mitt.
The numerical setup is
<span>11<span>g</span></span>CO2×1 mol CO2/44.01g CO2=0.25 mol CO2
gCO2 cancels out so it is
11 x 1 mol CO2/44.1 CO2= 0.25 mol CO2
Answer:
The answer to your question is: The second option.
Explanation:
Atoms are stable when they gain or lose electrons to have 8 electrons.
They have one valence electron. Noble gases have 8 electrons, not one, If they would have 1 electron they would be extremely reactive.
They have eight valence electrons. This is the right answer, noble gases have 8 electrons that is why they are unreactive.
They have seven valence electrons. If noble gases would have 7 electrons, they would be very reactive.
They have two valence electrons. This option is incorrect, elements that have 2 electrons are reactive like Calcium, Magnesium, etc.
