Answer:
Heat required = 13,325 calories or 55.75 KJ.
Explanation:
To convert a water to steam at 100 degree celsius to vapor, we have to give latent heat of vaporization to water
Which equals ,
Q = mL,
Where, m is the mass of water present
L = specific latent heat of vaporization
Here , m= 25 gram
L equals to 533 calories (or 2230 Joules)
So, Q = 25×533 = 13,325 Calories
Or , Q = 55,750 Joules = 55.75 KJ
so, Heat required = 13,325 calories or 55.75 KJ.
Answer: dry ice is a solid which makes it different from a gas
Explanation:
Answer:
78kJ
Explanation:
Energy change = Energy in (reactants) - Energy out (products)
According to this question, energy is released, meaning that the reaction is EXOTHERMIC. Hence, the energy change will be negative (-) i.e bond energy of reactants is greater than bond energy of products.
Energy in = bond energy of reactants = 43kJ
Energy out = bond energy of products = ?
Energy change of exothermic reaction = -35kJ
Therefore;
-35kJ = 43kJ - x
x = 35kJ + 43kJ
x = 78kJ
The bond energy of the products is 78kJ.