Problem: An α particle,  4He2+, has a mass of 4.00151 amu. Find the value of its charge-to-mass ratio in C/kg. 

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We’re being asked to find the value of the charge-to-mass ratio in C/kg for an α particle 4H2+

The mass of the α particle is 4.00151 amu.


The charge-to-mass ratio in C/kg. First, we have to calculate the mass of 4H2+ in kg.

1 amu = 1.66054x10-27 kg

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Problem Details

An α particle,  4He2+, has a mass of 4.00151 amu. Find the value of its charge-to-mass ratio in C/kg.

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Our data indicates that this problem or a close variation was asked in Chemistry: A Molecular Approach - Tro 2nd Edition. You can also practice Chemistry: A Molecular Approach - Tro 2nd Edition practice problems.