(i) We start by calculating the mass of sugar in the solution:
mass of sugar = concentration × solution mass
mass of sugar = 2.5/100 × 500 = 12.5 g
Then now we can calculate the amount of water:
solution mass = mass of sugar + mass of water
mass of water = solution mass - mass of sugar
mass of water = 500 - 12.5 = 487.5 g
(ii) We use the following reasoning:
If 500 g solution contains 12.5 g sugar
Then X g solution contains 75 g sugar
X=(500×75)/12.5 = 3000 g solution
Now to get the amount of solution in liters we use density (we assume that is equal to 1):
Density = mass / volume
Volume = mass / density
Volume = 3000 / 1 = 3000 liters of sugar solution
Answer: There are 20 carbons atoms, 62 oxygen atoms and 44 carbon atoms on the left side of the equation.
Explanation:
In the given chemical reaction:
Reactants side = Left side
Number of atoms =
Coefficient × Number of atoms of an element in a unit molecular formula
Number of carbon atoms = 2 × 10 = 20
Number of oxygen atoms = 31 × 2 = 62
Number of hydrogen atoms = 2 × 22 = 44
Balanced chemical reaction:
2NaCl(aq) + Hg₂(C₂H₃O₂)₂(aq) → Hg₂Cl₂(s) + 2NaC₂H₃O₂<span>(aq).
</span>NaCl - sodium chloride.
Hg₂(C₂H₃O₂)₂ - mercury(I) acetate.
NaC₂H₃O₂ - sodium acetate.
Hg₂Cl₂ - mercury(I) chloride or <span>mercurous chloride</span>, low solubility in water.
Oxidation number of sodium is +1 and for mercury is also +1.