What are the relative masses of the three main subatomic particles? (Assume the mass of a proton is 1.) * A. Proton = 1, neutron = 1.5, electron = 0.5
B. Proton = 1, neutron = 1, electron = 1
C. Proton = 1, neutron = 1.25, electron = 0.25
D. Proton = 1, neutron = 1, electron = 1/1840

Indicate whether the specified alkyl halides will form primarily substitution products, only elimination products, both substitution and elimination products, or no products when they react with sodium methoxide. 1-bromobutane 1-bromo-2-methylpropane 2-bromobutane 2-bromo-2-methylpropane

The bond energy for the van der waals bond between two helium atoms is 7.9×10−4ev. assuming that the average kinetic energy of a helium atom is (3/2)kbt, at what temperature is the average kinetic energy equal to the bond energy between two helium atoms

Can someone me with 6 to 10 plz this is for masteries test.