Identify the type of reaction
Na2SO4 + 2AgNO3 → Ag2SO4 + 2NaNO3

What is common about these molecules? a.their atoms are held together by covalent bonds. b.they are all made up of the same two atoms. c.their atoms are held together by ionic bonds. d.they are all made up of oxygen atoms only.

Non renewable resources like petroleum eventually

Suppose a lab group reports a ppercent yield of sand of 105. is it really possible to collect more sand than was originally represented? what is the possible explanation for the extra product?