Estimate the amount of lime and soda ash required if a split flow treatment system is used to achieve an overall hardness of 100 mg/L as CaCO3. Assume the treatment system residual hardness is 40 mg/L as CaCO3.

The is a particle with one unit of positive charge a. proton b. positron c. electron d. nucleus awnser quick it is a important science test!

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.

What is the effect of returning nuclear reactor cooling water back into bodies of water?