Answer:
Hydroxide concentration of the sample is 1.3x10⁻⁶M
Explanation:
The equilibrium constant of water, Kw, is:
H₂O(l) ⇄ H⁺(aq) + OH⁻(aq)
Kw is defined as:
Kw = 1.7x10⁻¹² = [H⁺] [OH⁻]
As the sample is of pure water, both H⁺ and OH⁻ ions have the same concentration because come from the same equilibrium, that is:
[H⁺] = [OH⁻]
We can write the Kw expression:
1.7x10⁻¹² = [OH⁻] [OH⁻]
1.7x10⁻¹² = [OH⁻]²
1.3x10⁻⁶M = [OH⁻]
<h3>Hydroxide concentration of the sample is 1.3x10⁻⁶M</h3>
I personally think b is the correct answer.
A-children don't think about what adults should do
B-limits give children skills to solve problems in life as they grow
C-its good to let a child know whats right and wrong
D-Limits wouldn't give kids insecurity
Please tell me if i'm right or wrong!:)
Answer:
18 CO2 + 16 H2O = C18H32O16 + 18 O2
Explanation:
Reaction type: double replacement
Compound Coefficient Molar Mass
CO2 18 44.0095
H2O 16 18.01528
C18H32O16 1 504.43708
O2 18 31.9988
Answer:
It has 4 valence electrons
Explanation:
Tin atoms have 50 electrons and 50 protons with 4 valence electrons in the outer shell.
The formula for chromium iii and sulfate ion is 2+3(1+4)= 2+(3x5)
