When a solution of iron(III) nitrate is mixed with a solution of sodium hydroxide, a rust colored precipitate forms. This precip
1 answer:
Answer: c. iron (III) hydroxide
Explanation:
A double displacement reaction is one in which exchange of ions take place. The salts which are soluble in water are designated by symbol (aq) and those which are insoluble in water and remain in solid form are represented by (s) after their chemical formulas.
The balanced chemical equation for solution of iron(III) nitrate is mixed with a solution of sodium hydroxide is:
As iron(III) hydroxide is insoluble in water , it is formed as a solid which is called as precipitate.
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Answer:
A. The final temperature of both substances is closer to the initial temperature of substance A than the initial temperature of substance B.
Explanation:
Given;
mass of substance A = mass of substance B = m
specific heat capacity of substance A = 3 times specific heat capacity of substance B
initial temperature of substance A = tₐ
final temperature of substance A = Tₐ
initial temperature of substance B =
final temperature of substance B =
At thermal equilibrium, the quantity of heat on both substances are equal.
Q = McΔθ
Where;
Q is quantity of heat
M is mass
c is specific heat capacity
Δθ is change in temperature
At thermal equilibrium;
Tₐ = = T
where;
T is the final temperature of both substances
Also,
Therefore, the final temperature of both substances is closer to the initial temperature of substance A than the initial temperature of substance B.