Question

How much salt (NaCl) is carried by a river flowing at 30.0 m3/s and containing 50.0 mg/L of salt? Give your answer in kg/day.

Answer 1

129,600kg/day

Step-by-step explanation:

The river is flowing at 30.0
`m^(3)/s`

1
`m^(3)/s` = 1000L

Multiply by 1000 to convert to L/s

flowrate of river = 30*1000 =30,000L/s

Convert L/s to litre per day by multiplying by 24*60*60

flowrate of river = 30,000 * 24*60*60 L/day

= 2,592,000,000L/day

if the river contains 50mg of salt in 1L of solution

lets find how many mg of salt (X) is contained in 2,592,000,000L/day

X=
`( 2,592,000,000*50)/(1)`

X= 129,600,000,000 mg/day

convert this value to kg/day by multiply by
`10^(-6)`

X= 129,600kg/day