What is the reaction type shown below? NH4NO3 - N20 + 2H20
Single Replacement
Synthesis
Decomposition
Double Replacement

Avoltaic cell converts chemical energy to

Asolid cylinder and a cylindrical shell have the same mass, same radius, and turn on frictionless, horizontal axles. the cylindrical shell has light-weight spokes connecting the shell to the axle. a rope is wrapped around each cylinder and tied to blocks of equal masses that are held the same height above the ground. both blocks are released simultaneously. the ropes do not slip. which block hits the ground first? or is it a tie?

By what factor does the drag force on a car increase as it goes from 65 to 110 km/h?