Problem: Janna, a student of a chemistry class, told her friend that she learnt in class that bottled water is not pure. Kim, her best friend, refused to believe Janna, referring to phrases on the label of the bottle. Help me

If 1.8 l of water is added to 2.5l of a 7.0 m koh solution, what is the molarity of the new solution

If blood contains 150g of hemoglobin per liter of blood, how much hemoglobin would be contained in 10 ml of blood

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.