If the density of mercury is 13.6g/ml, what is the mass in grams of 3426 ml of the liquid? A copper cylinder, 12.0 cm in radius, is 44.9 cm long. If the density of copper is 8.90 g/cm^3, calculate the mass in grans of the cylinder. (Assume pi=3.14

Covalent network solids typically have melting points and boiling points. the chemical formula of a network solid indicates in the molecule.

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.

Which of the four hypothetical substances you investigated would be most harmful to living organisms? 50 points!