12.01 amu
Work:
(12.000 × .9889) + (13.003 × .0111) = 12.01
- turn the precents into decimals
You know if it's endothermic or exothermic by doing the enthalpy reaction. If the change of temperature is negative then it is exothermic, while positive is endothermic.
If you get -22K then its exothermic, but if you get +22 its endothermic.
Answer:
As natural gas is a critical resource for the world and especially for the United states of america. The reason natural gas is used as a full commonly is because of high rising demands from many gas companys, people and gas stations.
