Answer: B
Explanation:
I think this is false. I really don't know the explination, but due to me just finishing this class. I'm going to go with B.
Answer:
hi
Explanation:
i am smart but i need this app cuz some are realy hard
Answer:
The answer to your question is 0.13 M
Explanation:
Data
[HNO₃] = ?
moles of HNO₃ = 9.8 x 10⁻²
volume = 705 ml
Process
1.- Convert volume to milliliters
1000 ml ------------------ 1 L
705 ml ------------------ x
x = (705 x 1) / 1000
x = 705 / 1000
x = 0.75 L
2.- Calculate the molarity
Molarity = moles / volume
Molarity = 9.8 x 10⁻² / 0.75
Molarity = 0.13
Radiation has optimized a number of process in the plastics industry. Infrared emitters are the devices that uses radiation which are used in the said industry. These are devices which could be adjusted precisely depending on the product and the process. These emitters can make plastics welding within seconds. And since they can be adjusted precisely, it saves a lot of time, space and of course energy.
<span>Mass of the solution = 0.17m
Kb for C6H5NH2 = 3.8 x 10^-10
We know Ka for C6H5NH2 = 1.78x10^-11
We have Kw = Ka x Kb => Ka = Kw / Kb
=> (C2H5NH2)(H3O^+)/(C2H5NH3^+) => 1.78x10^-11 = K^2 / 0.17
K^2 = 3 x 10^-12 => K = 1.73 x 10^-6.
pH = -log(Kw(H3O^+)) = -log(1.73 x 10^-6) = 5.76</span>
