The percentage by mass of calcium in Ca(OCI)2 is [Ca = 40...
The percentage by mass of calcium in Ca(OCI)2 is [Ca = 40.0; CI = 35.5; O = 16.0]
28.0%
31.6%
43.8%
44.5%
Correct answer is A
Molar mass of Ca(OCl)2 = 40 + (16 + 35.5)x2 = 143
% by mass of calcium in the compound =massofcalcuimmolarmassofcompound x 100%
% calcium = 40143×100
= 27.98% = 28%
In the laboratory preparation of ammonia, the flask is placed in a slanting position so as to ...
In the reaction: M + N → P ΔH = +Q kJ Which of the following would increase the conc...
How many moles of CO2 contains 16g of Oxygen? ...
To obtain pure carbon(ii)oxide from its mixture with carbon(iv)oxide, the mixture should be? ...
Insoluble salts can be prepared by? ...
In an electrochemical cell, polarization is caused by ...
Which of the these metals will not liberate hydrogen from dilute HCI? ...