Answer: The energy absorbed by the reaction from the water is 996 Joules.
Explanation:
Energy absorbed by the reaction or energy lost by the water to the reaction,Q.
Mass of the the reaction ,m = 60 g
Specific heat of water = c = 4.15 J\g ^oC
Change is temperature=![\Delta T=19^oC-23^oC=-4^oC](https://tex.z-dn.net/?f=%5CDelta%20T%3D19%5EoC-23%5EoC%3D-4%5EoC)
![Q=mc\Delta T=60 g\times 4.15 J\g ^oC\times (-4^oC)=-996 Joules](https://tex.z-dn.net/?f=Q%3Dmc%5CDelta%20T%3D60%20g%5Ctimes%204.15%20J%5Cg%20%5EoC%5Ctimes%20%28-4%5EoC%29%3D-996%20Joules)
Negative sigh indicates that energy was given by the water to the reaction.
The energy absorbed by the reaction from the water is 996 Joules.
Answer:
F=m x a
(F is force ,M is mass and A is acceleration)
in thisncase the Mass is given but we need to find ou the acceleration
Formula for acceleration-
a=(v - u)/t
(v is final velocity , u is initiatal velocity and t is time)
a = (0 - 80)/4
a= -80/4
a= -20
By substituting the values-
F= m x a
F= 1500 x -20
F=-30000N
Thus the force acted is -30000N
hope this helps
Answer:
3 m/s
Explanation:
The slope is distance divided by time, also known as 'speed'.
15 meters / 5 seconds = 3 meters per second.
Answer:
The higher the frequency, the shorter the wavelength. Because all light waves move through a vacuum at the same speed, the number of wave crests passing by a given point in one second depends on the wavelength. Speed shows how long it takes for wavelengths to travel.
Answer:
The answer is the number of protons in its atom
Explanation: