What is the term used to describe the energy needed to get a reaction started?

a. adhesion energy

b. activation energy

c. cohesion energy

d. chemical energy

Nitrogen and hydrogen react to form ammonia as described by the chemical equation below: N2 + 2 H2 → 2 NH3 If you start with 2 moles of N2, how many moles of NH3 can you make? Fill in the t-chart below to answer the question.

What is the molar mass of calcium oxide

What variables can be used to determine the pressure exerted by a gas?

How many protons are In this element, Au which is gold with a mass of 196.97 and a atomic number that is 79

S Which could occur in a closed system? A. Chemical energy is transformed to electric energy in the system. B. During a transformation of chemical energy to mechanical energy, thermal energy is released to the environment. C.

How does a campfire involve energy? Is it endothermic or exothermic? What would be the system and what would be the surroundings?

2. What is the electron configuration of an electrically neutral atom of magnesium?

The closeness of a measurement to the actual value of what is being measured

The chemical standard for the quantity of a mole is based on which substance?

What gas is needed to stay alive and breathe properly