4.1 Code Practice: Edhesive

The program is an illustration of while loops.

While loops are used to perform iterative operations, until the condition is met

The program in Python, where comments are used to explain each line is as follows:

#This prompts the user for name

name = input("Please enter a name (Nope to end) ")

#This checks if input is "Nope"

while name.lower()!="nope":

   #If no, this prints the greetings

   print("Nice to meet you",name)

   #This prompts the user for another input

   name = input("Please enter a name (Nope to end) ")

Note that the loop is repeated until the user enters "Nope" or "nope"

Read more about while loops at:

link

In python 3:

while True:

   name = input("Please enter a name: (Nope to end) ")

   if name == "Nope":

       break

   print("Nice to meet you {}".format(name))

I hope this helps!

answer: when the substance contain the two parts (polar and non-polar) like soap.

explanation:

b.. i believe would be the right one sorry if im wrong.