Which symbol represents an atom in the ground state with the most stable valence electron configuration?

(1) B (3) Li

(2) O (4) Ne

19 How many moles of Cly are produced from 1 mole of CCle.

Express the product of 9.0 x 10^-4m and 8.1 x 10^4m using the correct number of significant digits

An empty 10-ml volumetric flask weighs 10.267 g. after filling to the mark with distilled water at 20°c, the mass is 20.219 g. what is the mass of water in the flask

Tell me the three uses of x-rays?

How many molecules are in 1 mole of H2O molecules?

Assume 3 molecules of Fe react according to the following equation. 3Fe + 4H2O Fe3O4 + 4H2 How many molecules of H2 are produced? How many water molecules are required? What is the mole ratio of Fe to H2O?

10.0 mL of a HF solution was titrated with a 0.120 N solution of KOH; 29.6 mL of KOH were required to completely neutralize the HF. Calculate the normality of the HF solution.

The number of grams present in 1.35 mol of Fe is

Which can associate a suspect's gun with a crime?

In which era did the first fish appear? a. Carboniferous b. Paleozoic C. Mesozoic d. Permian