You can look on the periodic table for the number of automic mass units in each element.
1 mole Li = 6.94 amu
6.94 • 2 = 13.9 amu
There are 13.9 amu in 2 moles of Li
Answer : The temperature for non-catalyzed reaction needed will be 456 K
Explanation :
Activation energy : The energy required to initiate the reaction is known as activation energy.
According to the Arrhenius equation,
Since, the rate for both the reaction are equal.
..........(1)
where,
= activation energy for non-catalyzed reaction = 75 kJ/mol
= activation energy for catalyzed reaction = 49 kJ/mol
= temperature for non-catalyzed reaction = ?
= temperature for catalyzed reaction = 
Now put all the given values in the above formula 1, we get:
Therefore, the temperature for non-catalyzed reaction needed will be 456 K
Ping pong ball - 0.0840 g
Bottle cap - 0.92 g
Marble - 2.711 g
Combination or Synthesis Reaction. A combination of synthesis reaction is one. where a new product is synthesized by combination of two or three reactants.
Decomposition Reaction
Displacement or Replacement Reaction
Acid Base Reaction
Combustion Reaction
The formula of work is Work (Joules)=Force (Newtons) · distance in the direction of the force (meters), therefore its just a matter of replacing factors.
Work done = 12 · 4.5= 54 joules
