Answer:
It takes 12,000 Joules of energy to melt 35 grams of ice at 0 °C
Explanation:
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Answer:
human blood is slightly basic
Explanation:
If the pH of a solution is less than 7, it is acidic. If the pH is 7, the solution is neutral and if the pH is greater than 7,the solution is basic. So human blood is slightly basic.
Answer:
The enthalpy change during the reaction is -7020.09 kJ/mole.
Explanation:
First we have to calculate the heat gained by the calorimeter.

where,
q = heat gained = ?
c = specific heat = 
= final temperature = 
= initial temperature = 
Now put all the given values in the above formula, we get:


The heat gained by water present in calorimeter. = q'

where,
q' = heat gained = ?
m = mass of water = 
c' = specific heat of water = 
= final temperature = 
= initial temperature = 

q ' = 12,060.38 J
Now we have to calculate the enthalpy change during the reaction.

where,
= enthalpy change = ?
Q = heat gained = -(q+q') = -(2,485.25 J + 12,060.38 J)= -14,545.63 J
Q = -14.54563 kJ
n = number of moles fructose = 

Therefore, the enthalpy change during the reaction is -7020.09 kJ/mole.