It would be CaF2 because you will need to balance then so since F is -1 it'll need another one to balance with Ca +2
Answer: Option (a) is the correct answer.
Explanation:
According to thermodynamics, a closed system is defined as the system in which there will be no exchange of matter takes place but there will be exchange of energy between the system and surrounding.
On the other hand, an open system is defined as the system in which there will be exchange of both matter and energy takes place between system and surrounding.
Hence, we can conclude that out of the given options accurate descriptions of closed and open thermodynamic processes is that open processes are 'flow through' processes.
It is a stable isotope of lead metal. this isotope is of nonradioactive nature. The isotope occur naturally but can also be produced by fission reaction.
It appears as gray powder. With molecular weight of 207.9g/mol.
The boiling point is 1740° while the melting point is 327.4°
It is immediately available as typical and in custom packing of different grade of food, agriculture and pharmaceuticals.
it is used for biomedical and biological labelling. It is also used to measure pb (lead) level in blood by glycogen isotope dilution technique.
