- D answer is ? HELP!!!?

Discover Questions

There are 3 swimmers in a race.There will be first-place and second-place prize awarded. In how many different ways can 2 prizes be awarded? Please demonstrate how to solve this problem step by step
Thank You? Kindly in need of help with those.? What is the constant k of mars using semimajor axis of 1.52 AU with an orbital period of 687 days? Which molecule contains an exception to the octet rule? CO2
PCl3
N2O
NO2
CCl4?