Answer:34.28 Degree celcius
Explanation:The heat given is equal to the change in temperature multiplied by the mass and the specific heat capacity
This gives the equation:Q=mc∆T
Where Q=184,m=7, specific heat capacity=4.184,∆T=X-28,
But ∆T=Final temperature (T'')-Initial temperature (T')
Therefore the equation becomes
184=7×4.184(X-28)
Solving the remaining linear equation gives you X as 34.28°C
Gravitational force, electromagnetic force, weak nuclear force and strong nuclear force. - Gravitational force is common to all matter: all material bodies attract each other.Gravitational force is the force that works on earth beacuse of the sun mass. And all the smallest object in our solar system are attracted by the gravity force of the sun.
Given :
Concentration of hydrogen ions, 
.
To Find :
The pH of a solution.
Solution :
We know, pH of a solution is given by :
![pH = - log [ H^+]\\\\pH = -log ( 10^{-3})\\\\pH = 3](https://tex.z-dn.net/?f=pH%20%3D%20-%20log%20%5B%20H%5E%2B%5D%5C%5C%5C%5CpH%20%3D%20-log%20%28%2010%5E%7B-3%7D%29%5C%5C%5C%5CpH%20%3D%203)
Therefore, the pH of the solution is 3 .
