Find all x such that 2x == x (mod 5)

Introductory Chemistry 5
What is an oxidizing agent? What is a reducing agent?

Introductory Chemistry 5
How many grams of magnesium oxide form when 14.8 L of oxygen gas, measured at STP, completely reacts with magnesium metal according to this reaction? \(2\ \mathrm{Mg}(\mathrm{s})+\mathrm{O}_{2}(g) \rightarrow 2\ \mathrm{MgO}(\mathrm{s})\)

Physics: Principles with Applications 7
(III) An atomic nucleus of mass m traveling with speed v collides elastically with a target particle of mass 2m (initially at rest) and is scattered at \(90^{\circ}\). (a) At what angle does the target particle move after the collision? (b) What are the final speeds of the two particles? (c) What fra

Chemistry 11
A graduated cylinder is filled to the 40.00-mL mark with a mineral oil. The masses of the cylinder before and after the addition of the mineral oil are 124.966 g and 159.446 g, respectively. In a separate experiment, a metal ball bearing of mass 18.713 g is placed in the cylinder and the cylinder is

Physics: Principles with Applications 7
A 75.0-kg firefighter climbs a flight of stairs 28.0 m high. How much work does he do?

Anatomy & Physiology 1
Net filtration pressure is calculated by ________. a. adding the capillary hydrostatic pressure to the interstitial fluid hydrostatic pressure b. subtracting the fluid drained by the lymphatic vessels from the total fluid in the interstitial fluid c. adding the blood colloid osmotic pressure to the c

Human Anatomy & Physiology 9
The velocity of nerve impulse conduction is greatest in (a) heavily myelinated, large-diameter fibers, (b) myelinated, small-diameter fibers, (c) nonmyelinated, small-diameter fibers, (d) nonmyelinated, large-diameter fibers.

Principles of Economics 9
Command-and-control regulation may be better than a corrective tax if a. a corrective tax would have differential effects on different industries. b. some polluters can reduce emissions more cheaply than others. c. the negative externality is so large that the optimal quantity is zero. d. knowledge a