Answer:
Explanation:
Here in Calcium Chloride ionic bond is present in between calcium and chlorine atoms. As we know according to Octet rule calcium have two excess atoms and for matching nearest noble gas electronic configuration. It donate two electrons to gain more stability and form 
, while chlorine is deficient from one electron to meet nearest noble gas electronic configuration therefore two chlorine atoms accept excess electron from calcium individually and form two
ions.
Hence aqueous solution of calcium chloride breaks the ionic bond pairing in one and twoions: 
Answer:
Explanation:
D. When the truck driver slammed on the brakes, all the boxes in the back
of the truck slid forward.
Answer:
15
Explanation:
Magnesium Acetate Mg(C2H3O2)2
Number of atoms:
Carbon = 4
Hydrogen = 6
Magnesium = 1
Oxygen = 4
Total = 15
First, you need to find:
One mole of
is equivalent to how many grams?
Well, for this you have to look up the periodic table. According to the periodic table:
The atomic mass of Calcium Ca = 40.078 g (See in group 2)
The atomic mass of <span>Chlorine Cl = 35.45 g (See in group 17)
</span>
As there are two atoms of Chlorine present in
, therefore, the atomic mass of
would be:
Atomic mass of
= Atomic mass of Ca + 2 * Atomic mass of Cl
Atomic mass of
= 40.078 + 2 * 35.45 = 110.978 g
Now,
110.978 g of
= 1 mole.
75.9 g of
=
= 0.6839 moles.
Hence,
The total number of moles in 75.9g of
= 0.6839 moles
According to <span>Avogadro's number,
1 mole = 1 * </span>
molecules
0.6839 moles = 0.6839 *
molecules =
molecules
Ans: Number of molecules in 75.9g of = molecules
-i
