24.Calculate the percentage relative abundance of B-10 and B-11, if its average atomic mass is 10.804 amu.
25. Correct the false statement.
a. Noble gases are diatomic.
b. Molar mass of CO2 is 42g.
c. Atomicity of Phosphorus is 8.

Litmus paper is made from water-soluble dyes which are extracted from lichens. this paper is used as an acid-base indicator. which of these common household substances would turn blue litmus paper red? a) bleach b) lye c) soap d) vinegar

How to convert a density of 0.791g/cm3 to lb/ft3

Consider the following reactions. (note: (s) = solid, (l) = liquid, and (g) = gas.) mg(s) + ½o2(g) → mgo(s) + 146 kcal/mole h2(g) + ½o2(g) → h2o(g), δh = -57.82 kcal/mole what type of reaction is represented by the previous two examples?