The mass of a proton is ( )
举一反三
- A measurement establishes the position of a proton with an accuracy of 1.00 Í10-11 m. The uncertainty in the proton’s position 1.00 s later is ( )
- 9-6. The main mass transfer modes<br/>of solid state sintering are ( ). A: evaporation-condensation<br/>mass transfer B: diffusion<br/>mass transfer C: flow<br/>mass transfer D: solution-precipitation<br/>mass transfer
- In 1H-1H COSY and NOESY, both dimensions correspond to the proton NMR spectra.
- What is the essence of cathode rays? A: proton B: neutron C: electron D: atom
- It was a time of mass ______ .