Answer:
2.08 moles
Explanation:
number of molecules = mass / molecular mass of SO₄
number of molecules = 200 g / 96.06 g/mol
number of molecules ≈ 2.08
Hg<span> is the modern </span>chemical symbol for mercury<span>. It comes from hydrargyrum, a Latinized form of the Greek word ὑδράργυρος (hydrargyros), which is a </span>compound<span>word meaning "water-silver" (from ὑδρ- hydr-, the root of ὕδωρ, "water," and ἄργυρος argyros "silver") – since it is liquid like water and shiny like silver.</span>
The stars in the solar system are made of hydrogen and helium
Column 1 because it has 1/8 valence electrons and alkaline metals are reactive
