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AnnZ [28]
3 years ago
6

How to find the Ka of an acid?

Chemistry
1 answer:
bonufazy [111]3 years ago
7 0
We know that acids have a pH of under 7. 

We also need to:
Set up an ICE table for the chemical reaction.  Solve for the concentration of H3O+ using the equation for pH  Use the concentration of H3O+ to solve for the concentrations of the other products and reactants.
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How much energy does an X-ray with an 8 nm (8 x 10-9 m) wavelength have?
Vlada [557]

Answer: 2.48×10^-17 J

Explanation:

Given the following :

Wavelength = 8nm (8 x 10^-9 m)

Energy(e) of X-ray =?

Energy=[speed of light(c) × planck's constant (h)] ÷ wavelength

Speed of light = 3×10^8m/s

Planck's constant = 6.626×10^-34 Js

Wavelength = 8 x 10^-9 m

Energy = [(3×10^8) * (6.626×10^-34)] / 8 x 10^-9

Energy = [19.878×10^(8-34)] / 8 x 10^-9

Energy = 2.48475 × 10^(-26+9)

Energy = 2.48×10^-17 J

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