Answer:
Anion is negatively charged particle.
Calcium +2. Its cation
Oxygen -2
Explanation:
An anion is a charged particle with a negative charge. Anions has charge of -1
Oxygen require two electrons to complete its octet and hence its charge is -2
Calcium is a cation and has a positive charge of +2
Example
H2SO4
H = 2 atoms
S = 32 atoms
O = 4 atoms
atomic mass :
H = 1 u.m.a
S =32 u.m.a
O= 16 u.m.a
H2SO4 = 1 x 2 + 32 x 1 + 16 x 4 = 98 g/mol
hope this helps!
The new lowered freezing point of the benzene mixture is determined as 2.4°C.
<h3>
Effect of impurities in freezing point</h3>
The presence of impurities lowers the vapour pressure of the solution since the concentration of the solution is increased.
Change in temperature of the new mixture = 0.613 x 5.5°C = 3.1 °C
New freezing point = 5.5°C - 3.1°C = 2.4°C
Thus, the new lowered freezing point of the benzene mixture is determined as 2.4°C.
Learn more about freezing point here: brainly.com/question/24314907
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