Answer:
Single Displacement Reaction: a reaction in which an element is swapped for another in a molecule
A + BC ---> AC + B
Double Displacement Reaction: a reaction in which the cation of one molecule is swapped with a cation of another molecule
AB + CD ---> AD + CB
a) Single Displacement Reaction
3 Ca + 2 AlBr₃ ----> 3 CaBr₂ + 2 Al
b) Single Displacement Reaction
2 Al + 3 MgSO₄ ----> Al₂(SO₄)₃ + 3 Mg
c) Double Displacement Reaction
AgNO₃ + KCl ----> AgCl + KNO₃
The theobromine molecule contains a total of 22 bonds
The balanced equation is:
BaCl2 (aq) + Na2SO4 (aq) ----> BaSO4(s)+ 2 NaCl(aq)
This is a double replacement reaction.
The reactants are:
a) BaCl2: barium chloride, a ionic compound, therefore soluble in water,
b) Na2SO4: sodium sulfate, another ionic compound, therefore also soluble in water.
The products are:
c) BaSO4: barium sulfate, a solid not soluble in water which precipitates.
d) NaCl: sodium chloride, an ionic compound, therefore soluble in water.
Answer:
5.6 L
Explanation:
We can apply Charles' Law here since our pressure is constant (will not change inside the refrigerator) and we are relating change in volume with change in temperature:
V₁ / T₁ = V₂ / T₂ where V₁ and T₁ are initial volume and temperature, and V₂ and T₂ are final volume and temperature. Let's plug in what we know and solve for the unknown:
28.0 L / 25 °C = V₂ / 5 °C => V₂ = 5.6 L
5.6 L is our new volume (at 5 °C).
