Which reaction is exothermic?

CH4 + 2O2 - - >CO2 + 2H2O + 891 kJ

NH4NO3 + H2O + 25 kJ - - > NH4 + (aq) + NO3 - (aq)

2H2O + 286 kJ - - > 2H2 + O2

N2 + O2 + 181 kJ-->2NO

How does natural gas affect the way humans live

What is the main idea of the kinetic theory of heat?

What is a substance made from one type of atom

Where does a mid ocean ridge form?

what happens when baking soda is mixed with vinegar a a new substance is formed B the substances are the same c but the baking soda stays the same but the vinegar changes form D the mixture turns from a liquid into a solid

An engineering team is conducting a trial launch of a new rocket. Which part of the engineering process is the team in?

What is a physical property of copper

Which of the following occurs when the ocean's salinity increases? a. density increases. b. density decreases. c. temperature increases. d. temperature decreases.

What name is given to the bond between water molecules?

Which of the following statements is false? The mean free path of a molecule depends on the size of the molecule.