When 23.5-g of ammonium nitrate is dissolved in water it cools 1000.0-g of water from 32.3°C to 27.5°C. What is the value of ΔH

Which statement are accurate about snow flakes

Volume is a measurement of how fast particles of a substance are moving

Which of the following observations indicates that an atom has neutrons? some uncharged particles are scattered by a beryllium atom when it hits a gold foil. some uncharged particles bounce back from a gold foil when it is bombarded with alpha particles. a radiation consisting of uncharged particles is emitted when alpha particles strike beryllium atoms. a radiation which attracts electrons is produced when a beryllium atom is bombarded with alpha particles.