Explain how you can determine if a chemical reaction represents a single displacement reaction or a double displacement reaction

Which is not true about oxygen-17 and oxygen-18?

Asap i'm in class rn a 1,000-kg car is traveling 20 m/s on a flat stretch of road. it gets to a hill and coasts uphill until it stops. how high up the hill does the car travel? givens: equation: 1/2mv2initial=mghfinal solve for h. plug & chug, label.

Dao makes a table to identify the variables used in the equations for centripetal acceleration. what quantities belong in cells x and y?