Ide 3.
(a)
An element W has two isotopes, with relative abundance ratio Wa: Wo = 8:25.
Given the isotopic mass of Wa and Wb are 35.998 amu and 35.3454 amu,
respectively.
for a
(i) Calculate the percentage abundance of each isotope.
(ii) Calculate the average atomic mass of W.
(iii) Determine the relative atomic mass of W.

6. what does the symbol ah stand for? o one calorie given off by a reaction the specific heat of a substance the heat capacity of a substance the heat of reaction for a chemical reaction

If a solution is considered basic, then a) the hydroxide ion and hydronium ion concentrations are equal. b) the hydroxide ion concentration is less than the hydronium ion concentration. c) the hydronium ion concentration is greater than the hydroxide ion concentration. d) the hydroxide ion concentration is greater than the hydronium ion concentration.

The molality of calcium chloride (cacl2) in an aqueous solution is 2.46 m. what is mole fraction of the solute?