A sample of an isotope of hydrogen has a mass of 1.96. Regarding % of abundance, this hydrogen sample is composed mostly of which isotope of hydrogen

Measuring which physical property is most likely to produce the most precise results when trying to identify a substance

What is the name of this hydrocarbon?

Suppose you mix one mole of sulfuric acid (h2so4) with 1 mole of sodium hydroxide(naoh). why does the ph of the solution remain below 7? ( explain so i can get better understanding! )