How much water is needed to react with 64 grams of titanium (ll) sulfide (TiS)

Why are people not able to scuba dive in the deep part of the ocean

The twister and runaway train are two coasters at the same amusement park. both coasters start at the same height. the coaster for the twister is twice the mass of the coaster for the runaway train. which roller coaster has greater gravitational potential energy at the start of the ride?

When a device is used in a circuit in which the voltage is 81 v the current flowing through the device is 3 a what is the resistance of the device