Answer:
11.76
Explanation:
Potassium hydroxide is a strong base that dissociates completely according to the following reaction.
KOH(aq) → K⁺ + OH⁻
Then, the concentration of OH⁻ will be 0.00580 M.
The pOH of the solution is:
pOH = -log [OH⁻]
pOH = -log 0.00580 = 2.24
We can calculate the pH using the following expression.
pH + pOH = 14
pH = 14 - pOH = 14 - 2.24 = 11.76
We can use the dilution equation to find the volume of nitric acid needed to prepare a dilute solution
c1v1 = c2v2
c1 is concentration of concentrated solution and v1 is volume of concentrated solution
c2 is concentration of diluted solution and v2 is volume of diluted solution to prepared
substituting the equations
9.00 M x V = 1.25 M x 6.50 L
V = 0.903 L
903 mL of concentrated solution is required
Answer:
Explanation:
Each bond in a Lewis structure represents two electrons.
Answer:
The red one would be on the right and the blue one would be on the left.
Explanation:
<h3>
Answer:</h3>
1.0177 g/cm³
<h3>
Explanation:</h3>
We are given;
- Mass of the cube = 40 grams
- Length of the cube = 3.4 units
We are required to get the density of the cube;
- Assuming the length is 3.4 cm
- The volume of the cube is given by l³
Thus, Volume of the cube = 3.4 cm × 3.4 cm × 3.4 cm
= 39.304 cm³
But, density = Mass ÷ volume
= 40 g ÷ 39.304 cm³
= 1.0177 g/cm³
Therefore, the density of the cube is 1.0177 g/cm³