2Na + 2H20 --> 2NaOH) + 1H2 Given the reaction above...
When 62.1 g of sodium is dropped into 100.0 g of water what mass of the excess reactant that will be
left over once ALL of the limiting reactant has been consumed?

The formation of a solid, also known as a is an indication of a chemical change. precipitate particulate particle powder

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

Alidded glass container is filled with a colored gas. after a period of time, it is observed that the gas is uniformly spread throughout the box and that the movement has slowed considerably. next, a warm iron plate is carefully placed under the box. why is there resumed movement of the gas in the container?