Which of these is a function of all cells ?
1 answer:
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Answer:
0.56M of acetate ions
Explanation:
Given parameters:
Mass of Ba(C₂H₃O₂)₂ = 69g
Volume of water = 970mL = 0.97dm³
Molar mass of Ba(C₂H₃O₂)₂ = 255.415g/mol
Unknown:
Concentration of acetate ion in the final solution = ?
Solution:
Let us represent the dissociation;
Ba(C₂H₃O₂)₂ = Ba²⁺ + 2C₂H₃OO⁻
We see that 1M of will produce 2M of acetate ions
Now, let us find the molarity of the barium acetate;
Molarity =
Number of moles of Ba(C₂H₃O₂)₂ =
Number of moles = = 0.27moles
Molarity of Ba(C₂H₃O₂)₂ = = 0.28M
since 1M of Ba(C₂H₃O₂)₂ will produce 2M of acetate ions
0.28M of Ba(C₂H₃O₂)₂ will produce 2 x 0.28 = 0.56M of acetate ions
Answer : The volume of the resulting solution will be 0.4999 L.
Explanation : As the two molar concentration of the
solution are given and one of the volume concentration needs to be found.
So, according to the formula :-
And here if we consider
as 0.1718 L moles and 
as 0.3556 moles then we need to find 
as 
is given as 0.1222 moles.
Hence on solving the formula we get,
= (0.1718 X 0.3556) / 0.1222 = 0.4999 L
Explanation : As the two molar concentration of the
So, according to the formula :-
And here if we consider
Hence on solving the formula we get,