Question

Please answer as soon as possible .​

Answer 1

Answer:

a.). 1/5%

b.). The change in which no new substance formed is called physical change

Explanation:

a.) solute(nacl) =100g

solution =500g

concentration of solution = mass of solute/ mass

of solution

c =100 g/500g

c. =1/5%

b.). physical change is a change in which no new substance is formed and get not renewed