D I just took this and got it right
A hydrogen atom is an atom of the chemical element hydrogen. The electrically neutral atom contains a single positively charged proton and a single negatively charged electron bound to the nucleus by the Coulomb force. Atomic hydrogen constitutes about 75% of the baryonic mass of the universe.
<span>A. It increases the number of collisions between molecules.
I hope this helps :)</span>
<em>The instrument we use to measure seismic waves is the </em><em>seismometer, or seismograph, </em><em>those are two ways to name it.</em>
<em>Glad to help ya!! :)</em>
Lol i need to answer more and plus n could also = # 4.65
