In overall, the size of the mineral crystal depends on how fast a solution cools down. More time that is spent during cooling creates larger crystals because of the free movement of the constituent of mineral isotopes in a somewhat liquid solution.
17.5 litres removed and 17.5 litres of pure antifreeze added
Let k equal the amount of the solution to be removed
amount of antifreeze to be added
0.2(70 - x) + x = 0.4(70)
14 - 0.2x +x = 28
0.8x = 28 -14
x = 14/0.8 = 17.5
x = 17.5 litres removed and 17.5 litres of pure antifreeze added
Answer: The number of moles of 0.50 g Aluminium is 0.0185 moles.
To calculate the number of moles, we use the formula:
In the given question:
Given mass of Aluminium = 0.50 g
Molar mass of Aluminium = 27 g/mol
Putting values in above equation, we get:
Hence, the number of moles of 0.50 g of Aluminium is 0.0185 moles.
Number of moles is defined as the mass of substance given in grams divided by the molar mass of substance.
It is given that mass of is 2.50 g and molar mass of is 134.45 g/mol.
Therefore, calculate number of moles as follows.
Number of moles of
= 0.0186 mol
= 0.019 mol (approx)
Thus, we can conclude that 2.50 g CuCl2 equals 0.019 moles (approx).