For the balanced equation shown below, how many moles of N2 reacted, if 155 moles of NH3 are produced? 3H2 + N2 => 2NH3

Identify a specific example for each type of technology

Melting and boiling are endothermic processes. this means that these processes absorb energy from their surroundings in order to occur. use this information and the data you collected in the phase change gizmo to describe what happens to the temperature of water when you boil it, then explain why this result occurs.

What does a numerical subscript following an element in a chemical formula mean?