Answer: Jaleel´s method is correct and the right option is option number D
Step-by-step explanation:
its because 2(x-2)
= 2x-4
note 2 is multiplied with both x and -2!
Step-by-step explanation:
Since Ca(OH)2 is Basic, we need to find pOH:
pOH = - log [OH-]
pOH = - log(0.0001)
pOH = - ( - 4)
pOH = 4
Since, pH + pOH = 14
Therefore,
pH of 0.0001M sol. of Ca(OH)2 = 10
Answer:
Yes
Step-by-step explanation:
Answer:
Step-by-step explanation:
60
%
discount given in total, so only
40
%
is paid.
Explanation:
So here we need to make a two-step changing factor.
This means that we first take
0.5
(something decreasing by
50
%
) times
0.8
(something decreased by
20
%
) which is
0.4
(something decreased by
60
%
