Of the balanced chemical equations below, which one most correctly represents a combustion reaction? *
CH4 + 2 02 - CO2 + 2 H20
O
Ca0 + H20 - Ca(OH)2
O 2 N2 + 3 H2 - 2 NH3
O 2 Mg + 02 - 2 Mgo

Select the correct answer from each drop-down menu. daniel and sanya are scientists. daniel is studying whether the increasing frequency of tropical storms is affecting coastal erosion. sanya is investigating whether the discharge from industrial plants has any impact on the ph concentration of freshwater swamps in the surrounding area. which fields of science are daniel’s and sanya’s studies most closely related to? daniel’s field of study is related to science, and sanya’s field of study is related to .

The identities of substances are the same before and after which type of change

Aroller coaster is traveling at 13 mi./s when you purchase a hill that is 400 m long and down the hill exonerate at 4.0 m/s squared what is the final velocity of the posterior found your answer to the nearest number