<h3><u>Answer;</u></h3>
It contains only water.
<h3><u>Explanation;</u></h3>
- The pH of a solution is a measure of the molar concentration of hydrogen ions in the solution and as such is a measure of the acidity or basicity of the solution.
- A pH of 7 is neutral. A solution with a pH of 7 is known as neutral solution, such a solution has equal concentration of H+ and OH- concentration. The OH- concentration balances the H+ concentrations in the solution making it neutral.
- Pure water is an example of a solution that is neutral, has a pH of 7.
Answer:
Explanation:
Electrolysis of dissolved ionic compounds
An electrolyte formed by dissolving an ionic compound contains: hydrogen ions from the water, and positive ions from the compound. hydroxide ions from the water, and negative ions from the compound.
the answer is 4
The height of the projectile is given by:
h = ut - 0.5at²
The height will be 0 twice, once at t = 0 and the second time at the time when the journey has been completed, or t = hang time.
0 = 7.3t - 0.5(9.81)t²
t = 1.49 seconds
A and C
Imagine u are shooting a laser pointer at a mirror this is pretty much what it is