To adress the fuel crisis, an army barrac produced the bio-fuel based on common toilet. An analytical test proved that methane was the only fuel component produced there. 64 g of bio fuel required 128 g of pure oxygen for the complete combustion. On the basis of this data, calculate the percentage of methane in bio fuel

Why is an elements atomic mass not listed as a whole number on the periodic table

The characteristic of two different types of reactions are shown below. reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of and element. which statement is true about the atoms of the elements that participate in the two reactions? a: their identity changes in both reaction a and b. b: their identity changes in reaction a but not b. c: their identity changes in reaction b but not a. d: their identity remains the same.

In which reaction is precipitation occurring?