Answer:
q = - 3.569KJ 0r 3.569KJ Liberated heat (signifying the change in heat is negative)
Explanation:
liberated heat implies that change in heat is negative , therefore
q = -m c ΔT
where, m = mass of the Silver = 249 g
c = specific heat capacity of Silver = 0.235 Jg^{-1} °C^{-1
ΔT = change in temperature = 87°C- 26 °C= 61°C
q = -m x c x ΔT
= - 249 x 0.235 x 61 = - 3569.415J rounded to -3569J
Changing to KJ becomes= -3569/1000= - 3.569 KJ
q = - 3.569KJ 0r 3.569KJ liberated heat.
Answer: Option C.
The waste from these plants is safe, and its storage and disposal are simple
Explanation:
Nuclear power plants produce waste when producing electricity and these waste are not really harmful as you think, they are stored well before disposing appropriately.
Once the waste is removed the reactor, the wastes are cool down in storage pool, they are moved to dry caske which is a concrete storage and stores it for a long time and can be dispose until the site is available for it.
Resistivity is a measure of the resistance of a given size of a specific material to electrical conduction. ... Materials that conduct electrical current easily are called conductors and have a low resistivity. Those that do not conduct electricity easily are called insulators and these materials have a high resistivity.
Answer:
a. Synthesis reaction
b. Single - Displacement
c. Decomposition reaction
d. Combustion Reaction
Explanation:
Synthesis reaction: Reaction in which two or more substance combine to give a single compound.
Single - Displacement : Reaction in which the more reactive element displaces the less reactive element.Here Li replace OH from water.
Decomposition reaction: Reaction in which a single reactant decompose to give two or more products.
Combustion Reaction : IT is a redox reaction in which a substance is burned in the presence of oxygen to give carbon dioxide and water.
Answer : The amount of heat released, -35057 J
Solution :
Process involved in the calculation of heat released :
Now we have to calculate the amount of heat released.
where,
Q = amount of heat released = ?
m = mass of water = 18 g
= specific heat of liquid water =
= enthalpy change for condensation = -40700 J/mole
Now put all the given values in the above expression, we get
Therefore, the amount of heat released, -35057 J