Your answer is C hope that helped
Answer:
Compound: A substance that is made up of more than one type of atom bonded together.
Mixture: A combination of two or more elements or compounds which have not reacted to bond together; each part in the mixture retains its own properties.
Explanation:
The different substances in a mixture are not chemically combined, whereas the different elements in a compound are. The atoms do not combine in the mixture, but they combine when they form a compound.
The value of
of
is 1.7×
.
So, option C is correct one.
Calculation,
Number of moles of
= mass/molar mass = 0.45/278.1 = 1.618×
moles
Concentration of
and
ion
Molarity of
= Number of moles of solute /volume in lit
Molarity of
= 1.618×
moles /0.1 lit = 0.0162 M
→
+ 2
For certain amount of
, twice this amount of
ion formed.
The concentration of
ion formed = 2× 0.0162 M = 0.0324 M
Now,
of
= [
]
= 0.0162 ×
= 1.7×
.
learn about Molarity
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<u>Answer:</u>
<em>
</em>
<em />
<u>Explanation:</u>
Balancing is making the number of atoms of each element same on both the sides (reactant and product side).
To find the number of atoms of each element we multiply coefficient
subscript
For example
contains
5 × 1 = 5 ,Ca atoms and
5 × 2 = 10, Cl atoms
If there is a bracket in the chemical formula
For example
we multiply coefficient × subscript × number outside the bracket to find the number of atoms
(Please note: 3 is the coefficient, and if there is no number given then 1 will be the coefficient )
So
3 × 3 = 9 , Ca atoms
3 × 1 × 2 = 6, P atoms
3 × 4 × 2 = 24, O atoms are present.
So
Let us balance the equation given
![BaCl_2.2H_2 O > BaCl_2 + 2H_2 O](https://tex.z-dn.net/?f=BaCl_2.2H_2%20O%20%3E%20BaCl_2%20%20%2B%202H_2%20O)
(balanced equation)
<u>Reactant side </u> <u>Elements</u> <u>Product side
</u>
1 Ba 1
2 Cl 2
4 H 4
2 O 2
<u><em></em></u>
<u><em>
Balanced!!!
</em></u>