The solubility in mol dm/-3 of 20g of CuSO4 dissolved in ...
The solubility in mol dm/-3 of 20g of CuSO4 dissolved in 100g of water at 180o is
[Cu = 64, S = 32, O =16]
0.13
0.25
1.25
2.00
Correct answer is C
Relative molecular mass of CuSO4 = 64 + 32 + 16 * 4 = 160
The number of moles of CUSO4 = reacting mass/molecular mass = 20/160 = 0.125
100g of water dissolved 0.125m of CuSO4
100g of water will dissolve (0.125 * 1000)/100 = 1.25mol dm3
The property used in obtaining oxygen and nitrogen industrially from air is the? ...
2CO(g) + O2(g) → 2CO2(g) Given that ΔH[CO]is -110.4 kJmol-1 and ΔH[CO2] is -393.0 kJmol-1, the ...
The approximate volume of air containing 10cm3 of oxygen is?...
which of the following polymers is suitable for packaging and electrical insulation? ...
An alkene may be converted to an alkane by ...
Which group of elements forms hydrides that are pyramidal in structure? ...
3Cl2 + 2NH3 → N2 + 6HCl. In the above reaction, ammonia acts as...