candaceblanton
25.06.2019 •
Chemistry
The solubility of sodium chloride is 284g per 100g of water. what is the concentration in parts per million? (ppm)
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Ответ:
As
Parts per million can be calculated by applying formula
Ppm=(mass of solute/mass of solution)x 1,000,000
In given condition
Mass of solute which is NaCl is 284g
Mass of solution which is water is 100g
Ppm=284/100x 1,000,000
=284000ppm
Ответ:
The given question is incomplete. The complete question is:
At a certain temperature the rate of this reaction is second order in
with a rate constant of 
. 
Suppose a vessel contains
at a concentration of 0.100 M Calculate how long it takes for the concentration of 
to decrease to 0.0240 M. You may assume no other reaction is important. Round your answer to 2 significant digits.
It takes 0.93 seconds for the concentration
to decrease to 0.0240 M.
Explanation:
Integrated rate law for second order kinetics is given by:
a= concentration left after time t = 0.0240 M
k = rate constant =
t = time taken for decomposition = ?
Thus it takes 0.93 seconds for the concentration
to decrease to 0.0240 M.