Using the periodic table entry of iron below, match the numbers with what they represent.

1. the number 26 number of valence electrons
2. the number 56 number of neutrons
3. the number 4 number of electrons in n = 3
4. the number 30 atomic number
5. the number 14 number of orbits
6. the number 2 atomic mass

Which feature indicates that mars resides in the inner region of the solar system

You have a pick-up truck that weighed 4,000 pounds when it was new. you are modifying it to increase its ground clearance. when you are finished

In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j? 1. write the equation 2.list out your known variables 3.plug the numbers into the equations 4.solve 5.write your solution statement that includes initial energy and final