Answer:
If you put friction in to skating rink then obvioulsy the skaters wont be able to glide and skate.
Explanation:
friction is power that disturbes the moving power. places like skating rink and slides try to have the least amount of friction.
Carbon dioxide (CO2) and other greenhouse gases act like a blanket, absorbing IR radiation and preventing it from escaping into outer space. The net effect is the gradual heating of Earth's atmosphere and surface, a process known as global warmin
Answer:
4.
Explanation:
I believe that #4 best shows the runoff in the system. We see 2/3 which is precipertation falling and 4 shows this water running off the mountains into the ocean.
Answer : As given in the question the concentration of acid and base are in equimolar proportion so,
the simple net ionic reaction that the system is undergoing can be given as,

we can now calculate the total number of moles reacting in the species as,
(30 mL) X (1L/1000ML) X 0.150 moles =

moles.
Now, we know the specific heat of water as 4.186 J/g °C.
Now considering the total volume of the product as 60 mL or 60 g (as it is water it can be g or mL) hence, ΔC is 2.5 C.
Now converting these into joules = 4.186 J/g °C X 2.5 X 60 = 627.9 Joules.
On dividing this we get 627.9 Joules /

moles = 140 KiloJoules/mole.
So the answer is 140 KJ/M.
The enthalpy of combustion of propane is -2202.0 kJ/mol.
The enthalpy of combustion is released when one mole of compound is burned in the presence of excess oxygen. The bonds between carbon and hydrogen in the compound are broken and bonds between carbon and oxygen are formed as well as bonds between hydrogen and oxygen are formed.