What are the coefficients when the equation below is balanced? _CH4 + _O2 = _CO2 + _H2O

A) 2,2,1,2
B) 1,2,3,4
C) 1,3,4,1
D) 1,2,1,2

In the analysis of hair and fiber samples, which does a compound comparison microscope allow for that a conventional compound microscope does not? a. simultaneous observation b. polarization c. fluorescence d. higher magnification

What is the relation between concentration of reactants and the rate of chemical reaction?

How have the greenhouse gasses increased from the year 2000 to 2018