How do scientists determine the number of neutrons in an atom? question 4 options: they subtract the atomic number from the atomic mass. they add the number of electrons and protons. they find the number of protons. they divide the atomic mass by two.

The speed of light is around 6.706×10^8 miles per hour. what is the speed of light in units of miles per minute?

14. complete and balance the equations for the single displacement reactions. a. zn + pb(no3)2 -> b. al + niso4 -> 15. complete and balance the equations for the double displacement reactions. a. agno3(aq) + nacl(aq) -> b. mg(no3)2(aq) + koh(aq) -> 16. complete and balance the equations for the combustion reactions. a. __ ch4 + o2 -> b. __ c3h6 + o2 -> c. + o2 ->

What’s the percent by mass of carbon in c10h14n2