Abrine solution of salt flows at a constant rate of 4l/min into a large tank that initially held 100l of pure water. the solution inside the tank is kept well-stirred and flows out of the tank at a rate of 3l/min. if the concentration of salt in the brine entering the tank is 0.2kg/l, determine the mass of the salt in the tank after t minutes. when will the concentration of salt in the tank reach 01.kg/l?

To reach 01.kg/L concentration of salt in the tank will take around 18.9 min

Explanation:

Attached

a) The mass of the salt in the tank after t minutes is:

b) In 484.8 min the concentration of salt in the tank reach 0.1 kg/L

Explanation:

please look at the solution in the attached Word document

in scientific notation, the value of the  speed of light in a vacuum

  will be written as 2.995 * 10^8. when this value is represented in the form of

  a * 10^b, then, a = 2.995 and b = 8.

the value of the speed of light in a vacuum given above can also be rounded up to approximately 300000000. in this case, the scientific notation will be written as 3 *10^8.

answer is: nuclear fusion produces elements that are heavier than helium.

nuclei combine to form a heavier nucleus, releasing energy.  

for example, fusion of hydrogen atoms at the sun.  

this fusion nuclear reaction is in the inner core of the sun and hydrogen (atomic number 1) is conveted into helium (atomic number 2).  

the inner core is the central region of the sun and all solar energy is produced in the core by nuclear fusion.