3.mixture
4. element, or an compound (its in order)
6. solvent
I hope these answers help you!
Answer:
Explanation:
The expression for density is:
M is molar mass of Calcium = 40.078 g/mol
For cubic closest packed structure , Z= 4
is the density
Radius = 197 pm = 
Also, for fcc, 
Thus,
Any fire extinguisher should put out a fire, that is unless the extinguisher is old and faulty.