A water holding tank measures 90 m long,
60 m wide, and 9 m deep. Traces of mercury have been found in the tank, with a concentration of 65 mg/L.
What is the total mass of mercury in the
tank?
Answer in units of kg

Question

nilankshi · Answer

ya........

anonymous · Answer

the volume of the tank = l*b*h 
= 60*9*90
=48600 m^3
1 m^3 = 1000 ltrs

so 48600 m^3 = 486 * 10^5 ltrs

1litre contains 65 mg= 6.5 gm 

486 * 10^5 ltrs contain 6.5 * 486 *10^5 gms

=3195 * 10^5 gms = 319500 kgs