A small cart and one of larger mass collide and rebound off each other. The carts were initially moving with the same speed. Which one changes its velocity the most during the collision?.

your answer is a. the enthalpy of formation for a pure element in its standard state is always positive.

answer:

technetium is the most reactive. this is followed by silver. the least reactive out of these three elements is strontium.

a

you did not give any options thus this is the best answer i can give to you with this little information you have given

> they are both natural and not man made

> they can be tracked and predicted by the right tools

-love shrooms