Question

In chemistry, 6.022× 1023 is an important number called the Avogadro constant (or Avogadro\'s number). It expresses the number of atoms or molecules in a mole. Notice that it is a really, really big number, as indicated by scientific notation with a large positive exponent. Enter 6.022× 1023 into the calculator shown here. Then, by trial and error, find the largest number that can be added to 6.022× 1023 without changing its displayed value (as shown on the screen).

Answer 1

It says 'by trial and error'

That means YOU try and get the result by experiment

Answer 2

It also says 'on the calculator shown here' so presumably there is a link to an online calculator

Anyone else may get different results - as they will have different calculator....