# Posts by rupesh

Total # Posts: 8

**Chemistry**

0.001N NaoH calculate the ph

**science**

Calculate the ph of a buffer solution containing 0.2M NH4OH and 0.25M NH4Cl kb=1.8×10

**physics**

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. Dra the figure.

**History**

you can get it on google

**maths ( mental ability)**

P can do a piece of work in 9 days. Q is 50% more efficient than P. The number of days it takes Q to do the same piece of work is?

**maths**

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 beginning is?

**physics**

what is light year & 1 light year=to?

**8th grade**

n+3=12 transposing (-3)to r.h.s n=12-3 n=9

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