Which equation is a decomposition reaction?

a. li2co3 > li2o + co2

b. zn + hcl > zncl2 + h2

c. na2o + co2 > na2co3

d. c6h12o6 + o2 > co2 + h2o

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One of the cell membrane's functions is to protect the cell keep wastes in the cell create new cells keep light out of the cell

Energy defines the different "states" of matter. in no more than 3 sentences, describe the amount of kinetic energy that each of the 3 states of matter possesses and relate that to the atom/molecular motion of each "state".

What are two radioactive isotopes that are used for dating rocks that are older than 10 million years