Calculate the value of e°cell for the following reaction: 2au(s) + 3ca2+(aq) → 2au3+(aq) + 3ca(s)au3+(aq) + 3e- → au(s) e° = 1.50vca2+(aq) + 2e- → ca(s) e° = -2.87va) -4.37 vb) -1.37 vc) -11.6 vd) 1.37 ve) 4.37 v

Which real-world scenarios below represent physical and chemical changes? -running a car -exploding fireworks -mixing water and powdered drink mix -combining oil and vinegar to make salad dressing -taking aspirin for a headache -diluting bleach with water-digesting dinner-spreading peanut butter on bread

In the reaction between a crushed antacid tablet and vinegar what gas is emitted

Two people each hold the end of a rope and create waves by moving their arms up and down. this wave is best classified as a transverse wave because a) both the rope particles and the wave are moving in the same direction. b) the wave is moving up and down as the particles of the rope move horizontally. c) the wave is moving horizontally as the particles of the rope move up and down. eliminate d) the wave is moving in a parallel direction with the motion of the person's arms.