How many moles of sodium cyanide (nacn) would be needed to produce 4.2 moles of sodium sulfate (na2so4)? h2so4 + 2nacn → 2hcn + na2so4

Which statement about sound is not true? a. air particles travel with sound waves. b. sound waves cannot travel through a vacuum. c. sound waves exist even if no one hears them. d. air particles vibrate along the path of a sound wave.

When the speed of the bottle is 2 m/s, the average maximum height of the beanbag is m.

If a molecule with a molecular formula of c13h18 is treated with an excess of h2 in the presence of finally divided pt metal under conditions required for maximum hydrogenation of the molecule to give a molecule with a formula c13h24, how many rings are in the molecule?