Used mainly in the context of Geography a Constructive force is involved in making new land while a Destructive force breaks the land. As they are carrying opposite functions to one another they are considered as competing forces.
They are almost the same size and they are rocky planets (like not made of gas)
Hope this helps :)
Answer:
ΔH = -55.73 kJ/mol
Explanation:
Since the density of water is 1 g/ml and the problem wants us to use this value to find the mass of NaOH and HNO3 we arrange the original equation of
Since no heat was lost or gained
qrxn+qsoln=0. ----> qrxn=-qsoln.
qsol = mc*()
The mass of the solution is the mass of NaOh and HNO3. 100+100= 200.
You plug in the remaining numbers using 4.18 as the heat capacity and 2 as the change in temperature:
qsol=200*(4.18)*(2)= 1672 J
qrxn= -1672 J
Now ΔH = qrxn over the amount in moles or grams. This problem asks for NaOH in moles. To calculate this we use the concentration formula
M= . -----> n=V*M.
Note that you must convert 100 ml to L to use this equation. So we have
n=0.1*0.300 where n=0.03
ΔH =
ΔH = -55733.3 J/mol
ΔH = -55.73 kJ/mol
Sir Joseph John Thomson, also known as J. J. Thomson