BASIC CONCEPTS OF CHEMISTRY PART 2 1. The mass of an atom compared to the mass of an atom of carbon-12 is called Atomic weight Molar mass Atomic number Relative atomic mass 2. On the carbon-12 scale, what is the relative atomic mass of hydrogen 20.1797 amu 15.9994 amu 12.000 amu 1.008 amu 3. Who first discovered the phenomenon of isotopes Curie Rutherford Soddy Dalton 4. How many isotopes does carbon have 4 2 3 5 5. What instrument is used to measure the exact masses of different isotopes Mass spectrometer Optical microscope Gas chromatograph Electron microscope Loading … Pages: 1 2
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