An isotope of an element has a mass number of 129 and it has 74 neutrons. How many protons does it have?
A) 203
B) 55
C) 129
D) 74

1) these are barrel shaped microtubules in most animal cells, that organize the spindles during cell division

Which of the following is not a good technique for managing used oil? a) have specific, labeled catch pans available for technicians who are collecting oil b) spills in your shop and any releases on pavement or outside should be poured down a drain c) do not use oil containers for antifreeze or other non-similar fluids d) be prepared for oil spills with the proper absorbents

Need ! asap will mark 10 pts using the room temperature line (orange line) and your periodic table, make lists that identify the state of matter (gas, liquid, or solid) in which each element you plotted exists at room temperature. explain your answers