How does the law of conservation of mass apply to this reaction: c2h4+o2--> 2h2o+2co2? the equation needs to be balanced. there are fewer oxygen atoms in the equation than hydrogen or carbon. only the oxygen needs to be balanced. there are equal numbers of hydrogen and carbon. the law of conservation of mass has already been applied. there is an equal number of each element on both sides of the equation. each element needs to be balanced

Which of the following statements comparing electron microscopy and light microscopy is false? which of the following statements comparing electron microscopy and light microscopy is false? both the electron microscope and the light microscope use the same wavelengths for illumination. images produced by light microscopes can be in color, whereas electron microscope images are black and white unless they are artificially colored. the electron microscope has greater resolution than the light microscope. electron microscopes can allow examination of viruses and internal cell structures, whereas light microscopes are limited to objects that are 0.5 micrometers and larger. request answer