Which sample of copper has atoms with the lowest average kinetic energy? 1. 10. g at 45°c 2. 20. g at 35°c 3. 30. g at 25°c 4. 40. g at 15°c

Which metal exist in liquid state and can be cut with knife ?

Select the correct answer from each drop-down menu. describe what happens to a carbon-11 atom when it undergoes positron emission. the decay of a carbon-11 atom _1_, and this causes it to emit _2_.options for 1: > changes a neutron into a proton> changes a proton into a neutron> is hit with a neutron> reconfigures its protons and neutronsoptions for 2: > a negatively charged electron-sized particle> a positively charged election-sized particle> two atoms and several neutrons> two neutrons and two protons

Which formula can be used to calculate the molar mass of hydrogen peroxide