Answer:
There are 0.100 moles chlorine ions (Cl-) involved
Explanation:
Step 1: Data given
Volume of CaCl2 = 25.0 mL = 0.025 L
Molarity of CaCl2 = 2.00 M
Step 2: The balanced equation
CaCl2 (aq) + 2AgNO3 (aq) ⇆ Ca(NO3)2 (aq) + 2AgCI (s)
CaCl2 → Ca^2+ + 2Cl-
Step 3: Calculate moles CaCl2
Moles CaCl2 = molarity CaCl* volume
Moles CaCl2 = 2.00 M * 0.025 L
Moles CaCl2 = 0.050 moles
Step 4: Calculate moles chloride ions
CaCl2 → Ca^2+ + 2Cl-
For 1 mol CaCl2 we have 1 mol Ca^2+ and 2 moles Cl-
Moles Cl- ions = 2*0.050 moles
Moles Cl- ions = 0.100 moles
There are 0.100 moles chlorine ions (Cl-) involved
Answer :
(a)
In this Lewis dot structure, there are 3 bond pair and 0 lone pair on the central atom. The total number of electron pair is 3. So, the hybridization of the molecule will be, and the geometry will be, trigonal planar.
(b)
In this Lewis dot structure, there are 4 bond pair and 0 lone pair on the central atom. The total number of electron pair is 4. So, the hybridization of the molecule will be, and the geometry will be, tetrahedral.
(c)
In this Lewis dot structure, there are 3 bond pair and 1 lone pair on the central atom. The total number of electron pair is 4. So, the hybridization of the molecule will be, but the the fourth position will be occupied by one lone pair. Hence, the geometry will be, trigonal pyramidal not tetrahedral.
(d)
In this Lewis dot structure, there are 2 bond pair and 1 lone pair on the central atom. The total number of electron pair is 3. So, the hybridization of the molecule will be, but the the third position will be occupied by one lone pair. Hence, the geometry will be, bent not linear.
The image is also shown below.
D) the outer planets have longer orbital paths than the inner planets