Explanation:
When a large block of ice is placed in a hot cup of water then some of the ice will melt into the cup. As a result, when ice melts then after sometime temperature of cup will become equal to the temperature of ice.
Therefore, ice won't melt further as surface area of cup is small so, only some of the ice will melt into it.
Whereas when same block melts when dropped into a lake it completely melts because lake has large surface area and hence, ice will melt into it easily. This is also because there is different in temperature of both ice and lake.
So, ice will melt into it as temperature of ice will be less than the temperature of lake.
Answer:
10
Explanation:
ur pefrct no matter the inside or outside
Answer:
Chemical energy is the answer
the anwser is Certybe Explanation:
Answer:
Final temperature of solution is 27.48
Explanation:
Total volume of mixture = (60.0+60.0) mL = 120.0 mL
We know, density = (mass)/(volume)
So mass of mixture = 
Amount of heat released per mol of 
= 
Where, m represents mass , C represents specific heat, 
represents change in temperature and n is number of moles
As this reaction is an exothermic reaction therefore temperature of mixture will be higher than it's initial temperature.
Let's say final temperature of mixture is T
So, 
Here 
and 
Moles of H_{3}PO_{4} are added = 
= 0.012 moles
So, ![(173.2\times 10^{3})J=\frac{[(135.6g)\times (3.78J.g^{-1}.^{0}\textrm{C}^{-1})\times (T-23.43)^{0}\textrm{C}]}{0.012}](https://tex.z-dn.net/?f=%28173.2%5Ctimes%2010%5E%7B3%7D%29J%3D%5Cfrac%7B%5B%28135.6g%29%5Ctimes%20%283.78J.g%5E%7B-1%7D.%5E%7B0%7D%5Ctextrm%7BC%7D%5E%7B-1%7D%29%5Ctimes%20%28T-23.43%29%5E%7B0%7D%5Ctextrm%7BC%7D%5D%7D%7B0.012%7D)
or, T = 27.48
So, final temperature of solution is 27.48
