Which of these pair of atoms are isotopes? A. scandium-46, titanium-46

B. iron-56, sodium-24

C. chlorine-35, chlorine-35

D. sodium-24, magnesium-24

1) this is the structure in the cell nucleus that houses a cell's genetic information

Part 1: include important facts found through your research. part 2: include your visual display. include your summary of “the chemistry of water” from the national science foundation website. include your experiment. part 3: include responses to the reflection questions.

Sum of brother and sisters age is 26. four times the brothers age is subtracted from three times the sisters age, the difference is 8. what are the ages of the brother and sister?