When balanced, which equation would have the coefficient 3 in front of any of the reactants? Zn HCl ZnCl2 H2 H2SO4 B(OH)3 B2(SO4)3 H2O Fe AgNO3 Fe(NO3)2 Ag C2H4O2 O2 CO2 H2O

Layer r contains a well-known index fossil that is 100 million years old. based on this information and the principle of superposition, a. layers t and m are older than 100 million years, and layers x and g are younger than 100 million years. b. layers t, m, x, and g are all older than 100 million years. c. layers t and m are younger than 100 million years, and layers x and g are older than 100 million years.