Calculate the number of molecules in 7.8 x 10-7 milligrams of potassium sulfide. Put your answer in scientific notation. Go to the
EXPONENT.

What is the ima of the 1 st class lever in the graphic given? 2 3 0.5

2pos suppose an object in free fall is dropped from a building. its starting velocity is 0 m/s. ignoring the effects of air resistance, what is the speed (in m/s) of the object after falling 3 seconds? give your answer as a positive decimal without units. answer here

Quiz1. which physical state of nitrogen has the highest entropy? a solid© b gasoc liquid