Question

A flask Contain 5 litres of a
chemical
is left open to the air, it is
found that
the chemical
Evaporates at the rate of 15% per hour. How much chemical will be left after 5 hours.​

Answer 1

Answer:

2.22 Litre of Chemical left after 5 hrs  if 5 litre chemical evaporates at a rate of 15% per hour

Step-by-step explanation:

A flask contains 5litres of a chemical.

chemical evaporates at a rate of 15percent per hour

Chemical Evaporation rate = 15 %  per hour

r = - 15 %

Time = n = 5 hrs

Chemical C = 5 litre

Amount remained after n hrs  = C(1 + r/100)ⁿ

Chemical remain after 5 Years =  5 (1  - 15/100)⁵

= 5 (0.85)⁵

= 2.22 Litre

2.22 Litre of Chemical left after 5 hrs

Answer 2

Answer:

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