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rupesh

Questions (5)

Calculate the ph of a buffer solution containing 0.2M NH4OH and 0.25M NH4Cl kb=1.8×10
1. 3 answers
2. 1,533 views
A body of mass m is suspended by two strings (right strings equals an angle a with horizontal and left an angle B with vertical.
1. 1 answer
2. 776 views
P can do a piece of work in 9 days. Q is 50% more efficient than P. The number of days it takesQ to do the same piece of work
1. 2 answers
2. 537 views
a man loses 12.5% of his money & after spending 70% of the remainder , he was left with Rs 210/- . the money he had at the
1. 4 answers
2. 7,377 views
what is light year & 1 light year=to?
1. 1 answer
2. 331 views

Answers (2)

you can get it on google
n+3=12 transposing (-3)to r.h.s n=12-3 n=9

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