Ineed an answer asap

how do scientists determine the number of neutrons in an isotope of an atom?

they subtract the number of protons from the mass number.

they subtract the number of electrons from the mass number.

they subtract the number of protons and neutrons from the mass number.

they add the number of protons and electrons.

Imagine that you’re getting ready to move to a new city. when people move, they are influenced by push factors and pull factors, and you have many reasons for your move. which of the following factors is an example of a pull factor? a. wanting to move because you’ve found a great new school somewhere new b. needing to move because there are not enough resources in your old hometown c. being forced to move because your old home is gone d. having to move because there are no jobs in your current hometown

Astudent is asked to identify and element that is pale yellow brittle solid and does not conduct electricity. at which location in this periodic table would the element most likely be found?

In apex! a liquid heated beyond a certain temperature becomes