What is the solubility of a salt X at 25ºC if the sa...
What is the solubility of a salt X at 25ºC if the saturated solution of the salt contains 0.28g in 100cm\(^3\) of the solution in mol\dm\(^3\)?
[ X = 56.0g ]
0.05
0.10
2.60
2.80
Correct answer is A
(mass / molar mass) X (1000 / vol )
(0.28 / 56.0) X (1000 / 100 )
= 2.8 / 56
= 0.05 mol\dm\(^3\)
Which of the following products of biotechnology can be used as a fuel in place of petrol? ...
N2(g) + O2(g) ↔ 2NO(g); ΔH = + 180.6 kJ mol-1 In the reaction above, increase in temperature wil...
Which of the following compounds is a soapless detergent? ...
What is the atomic number of Antimony? ...
The mixture of gases used in a photographer's flash tube is? ...
The colour of litmus in a neutral medium is ...
Which of the following is true concerning the properties of benzene and hexane? ...