First, we have to know that we can put [H+] instead of [H3O+]
so, according to the reaction equation:
by using ICE table:
H2O ↔ H+ + OH-
initial 0 0
change +X +X
Equ X X
when Kw = [H+] [OH-]
and when we have Kw = 2.4 x 10^-14
and when [H+] = [OH-] = X
∴ 2.4 x 10^-14 = X^2
∴ X = √(2.4 x 10^-14)
= 1.55 x 10^-7
∴[H+] = 1.55 x 10^-7
Answer:
0.013 M/s
Explanation:
Given data
- Initial concentration of BrO⁻: 0.56 M
- Final concentration of BrO⁻: 0.14 M
Since the final concentration of BrO⁻ is lower than the initial concentration of BrO⁻, BrO⁻ is dissapearing. The rate of dissapearance of BrO⁻ is:
rBrO⁻ = - Δ [BrO⁻] / t
rBrO⁻ = - (0.14 M - 0.56 M)/ 33 s
rBrO⁻ = 0.013 M/s
Answer:
Explanation:
Chemical is when there is a change of color odor or temperature rises
Answer:
The correct answers are "occur as Earth rotates through areas where ocean water bulges", "form due to the gravitational pull of the moon and Sun" and "occur on a predictable schedule".
Explanation:
Tides are defined as the rise and fall of the sea level that are formed due to the gravitational pull of the moon and Sun, however, the moon exerts a more stronger influence since it is much closer to the Earth. Tides occur as Earth rotates through areas where ocean water bulges, actually, Earth rotation makes an inertia effect that also contributes to tides force. Tides occur on a predictable schedule. For instance, it is known that coastal areas experience two low tides and two high tides every lunar day (24 hours and 50 minutes).
Answer:
6.85 g
Explanation:
Step 1: Given data
- Molar concentration of the solution: 0.200 M (0.200 mol/L)
- Volume of the solution: 100.00 mL (0.10000 L)
Step 2: Calculate the moles of sucrose (solute) required
Molarity is equal to the moles of solute divided by the liters of solution.
M = moles of solute / liters of solution
moles of solute = M × liters of solution
moles of solute = 0.200 mol/L × 0.10000 L = 0.0200 mol
Step 3: Calculate the mass corresponding to 0.0200 moles of sucrose
The molar mass of sucrose is 342.3 g/mol.
0.0200 mol × 342.3 g/mol = 6.85 g