When we can get the Kinetic energy from this formula KE= 1/2 M V^2
and we can get the potential energy from this formula PE = M g H
we can set that the kinetic energy at the bottom of the fall equals the potential energy at the top so,
KE = PE
1/2 MV^2 = M g H
1/2 V^2 = g H
when V is the velocity, g is an acceleration of gravitational force and H is the height of the fall.
∴ v^2 = 2 * 9.8 * 8 = 156.8
∴ v= √156.8 = 12.5 m/s
Potential energy
Explanation:because when your not moving at the highest point you have potential energy
<span>B) Boiling point Elevation states a solution typically has a measurably higher than a pure solvent . So would be B. </span>
Answer:
A: 5
B: 2
C: 15
D: 8
E: O for Oxygen
Explanation:
The atomic numbers must be equal on both sides of the equation, thankfully making this a simple math problem. The nitrogen captures a proton to create Oxygen 15.
<h3>
Answer:</h3>
= 0.3 moles bicarbonate
<h3>
Explanation:</h3>
- Carbonates and bicarbonates react with acids to form water, salt, and carbon dioxide.
- The reaction between bicarbonate and acetic acid is given by the equation;
- HCO₃ + CH₃COOH → CH₃COONa + H₂O + CO₂
- To calculate the number of moles of the bicarbonate we use the following steps.
<h3>Step 1: Write a balanced equation between Acetic acid and bicarbonate </h3>
- The balanced equation between acetic acid and the bicarbonate is;
NaHCO₃(s) + CH₃COOH(aq) → CH₃COONa(aq) + H₂O(l) + CO₂(g)
<h3>Step 2: Moles of bicarbonate</h3>
We use the mole ratio of bicarbonate to carbon dioxide
Mole ratio = 1: 1
Therefore, the moles of the bicarbonate is 0.3 moles
