30
40
20
50
Correct answer is B
To make a fixed amount of a dilute solution from a stock solution,
use the formula: C1V1 = C2V2
where: V1 = Volume of stock solution needed to make the new solution.
C1 = Concentration of stock solution.
V2 = Final volume of new solution.
C2 = Final concentration of stock solution
2 * 10 = 0.5 * V2
20 = 0.5V2
200.5 = V2
= 40dm3
50cm 3 of a saturated solution of potassium trioxonitrate (V)at 40°C contains 5.05g of the salt....
Catalytic hydrogenation of benzene produces ...
Which of the following bond types is intermolecular? ...
What is the main impurity in haematite?...
What type of reaction is involved in the formation of alkanols from alkenes? ...
The pair of compounds that belongs to the same homologous series is ...
The following ions have the same electron configuration except 8O, 12Mg,&n...