If the decomposition of hydrogen peroxide is a first order reaction and it takes 20.0 minutes for the initial concentration to fall from 1.6M to 0.80M, how much time has passed when only 0.050M remain

a) 80 min

b) 120 min

c) 100 min

d) 40 min

A 1600-kg car travels at a speed of of 12.5 m/s. What is its kinetic energy?

A light string is wrapped around a solid cylindrical spool of radius 0.565 m and mass 1.76 kg. a 5.04 kg mass is hung from the string, causing the spool to rotate and the string to unwind.

Does the distance between two charged objects affect the force of attraction?

The setting sun is actually visible after it has dropped below the horizon due to the bending of light waves entering the atmosphere at a non-perpendicular angle to the surface, a process known as

A small cart and one of larger mass collide and rebound off each other. The carts were initially moving with the same speed. Which one changes its velocity the most during the collision? They both have no change in velocity.

Why was Wegner's theory of continental drift not accepted by the scientific community? he had no friends in the community he could not explain how the continents moved his suggestion of land bridges was not accepted he could not explain why the

Which phrase accurately describes erosion? A. breaking rocks into smaller pieces and reforming them into new rockB. forming rocks and depositing them in new placesC.

Find the difference in the pressure between the Dead Sea (400m below) and Amman (1000m above) the sea level. The density of the air = 1.29 kg/m3

Which type of institution employs the most forensic anthropologists on a full time basis?

The cost, density and resistivity of copper, steel and aluminium