Molar mass KCl = 74.55 g/mol
Number of moles:
mass KC / molar mass
149 / 74.55 => 1.998 moles
Volume in liters: 500 mL / 1000 => 0.5 L
Therefore:
M = moles / volume
M = 1.998 / 0.5
M = 3.996 mol/L⁻¹
Answer:
they are not realted at all
Explanation:
Answer:
Four main processes erode the destructive waves; hydraulic action, compression, abrasion and attrition. Hydraulic Action is the sheer force of water crashing off the coastline causing the material to dislodge and be carried away by the sea.
Here we have to get the change of internal energy by the gas due to the 564 kJ work done by the system and addition of 344 kJ heat to the system.
The change of internal energy of the gas during this process is (+) 908 kJ
We know the summation of heat capacity (ΔU) and work done by a system is equivalent to the heat energy (ΔH).
Or, mathematically we may write, ΔU + W = ΔH.
Now the work done by the system (W) is (-) 564 kJ. The negative sign implies the work done by the system to surroundings as per thermodynamics.
The heat added to the gas (ΔH) is (+) 344 kJ. The positive sign indicate the addition of heat to the system.
On plugging the values: ΔU + (-) 564 kJ = (+) 344 kJ
Or, ΔU - 564 kJ = 344 kJ
Or, ΔU = 344 kJ + 564 kJ
Thus the change of internal energy, ΔU = (+) 908 kJ.
