When Ca(OH)₂ is added to a beaker of water the solution would turn phenolphthalein pink. Phenolphthalein is a common indicator and is only pink when in basic solutions. By adding calcium hydroxide, you are turning the solution into a basic solution since the concentration of OH⁻ ions is going up and therefore any phenolphthalein in solution would turn pink.
(answers A,C, and D would happen if you added an acid to the water such as HCl)
I hope this helps. Let me know if anything is unclear.
M = 10.0 Kg
acceleration of gravity = 9.8 m/s²
F = M * a
F = 10.0 * 9.8
F = 98 newtons.
hope this helps!.
Answer:
Explanation: Rotation is when the Earth spins on it's axis and that's how there's 24 hours in one day to complete a rotation. Revolution is when the Earth re-volutes itself around the Sun. At the end of each year the Earth makes a complete revolution around the Sun. This is also the same for the moon revolting around Earth, making it day and night.
Velocity because it is speed in direction.
