I think the answer is A but I could be wrong
Osmolarity=osmole of the solute/litres of the solution
ionic equation for dissociation of CaCl2 is
CaCl2--->Ca2+ +2Cl-
total osmoles for reaction are 1(Ca2+) + 2(Cl-)= 3 osmoles
therefore
0.50 moles of CaCl2 x 3 osmoles/ 1mole of CaCl2 = 1.5osmoles
osmolarity=1.5 /1.0 L=1.5 osmol/l
Atomic number The atomic number of each element is different than other Elements.
Answer:
physic
Explanation:
physical chnages are chnages to the appearance
chemical chnages are chnages like
color temperature chnaging fromna gas to a liquid etc
