Which number represents an acidic pH, 4 or 9? _______ Numerical Answers Expected! Answer for Blank 1:
1 answer:
You might be interested in
Answer:
0.19 kg
8 N
1.964 N
58.86 N
15 kg
Explanation:
w = Weight of an object = 100 N
g = Acceleration due to gravity of Earth =
m = Mass of an object
Weight is given by
Mass of the object is 0.19 kg
g =
m = 4 kg
Weight of the object is 8 N.
m = 200 g
Weight of the object is 1.964 N.
Weight is the force the Earth exerts on an object which is on the surface of the Earth.
m = 6kg
The force of the object is 58.86 N.
w = 150 N
a = g =
Mass of the object is 15 kg.
Answer: 20.7 kJ
Explanation:
According to first law of thermodynamics:
=Change in internal energy
q = heat absorbed or released
w = work done or by the system
w = work done on the system= {Work is done on the system is positive as the final volume is lesser than initial volume}
w = 4.51 kcal = (1kcal = 4.184kJ)
q = +1.79 kJ {Heat absorbed by the system is positive}
Thus for a system that receives 1.79 kJ of heat from surroundings and has 4.51 kcal of work done on it at the same time is 20.7 kJ