What is the dual nature of electrons

In the following reaction, is sb reduced or oxidized? 2sb (s) 6h2so4 (aq) sb2 (so4) 3 3so2 6h2o

Suppose a laboratory wants to identify an unknown pure substance. The valence electrons of the substance's atoms feel an effective nuclear charge of + 4.

1. Which of the following compounds give acidic solution with water: A) BaCl₂ B) NaCl C) SiCl₄ D) KCl 2. Br⁻¹ reduces H₂SO₄ to form: A) H₂S B) SO₃ C) SO₂ D) S 3. Which of the following oxide is basic in nature: A) Na₂O B) P₄O₁₀ C) Al₂O₃ D) SO₃ 4.

A 50.0-mL volume of 0.15 M HBr is titrated with 0.25 M KOH. Calculate the pH after the addition of 16.0 mL of KOH.

1 An unknown substance has a hydronium concentration of [H3O+]=6.8 x 10^-11 M. What kind of substance is this? A. acid B. base C. neutral D. saline

When does a spring tide take place? At the beginning of spring Only during the spring season Only after spring is over At any time

The highest cloud are known as

What is the mass of 4.85 X 10^22 atoms of iron (Fe) ?

If element x has 95 protons how many electrons does it have

Which of the following when dissolved in deionized water would make a good conducting solution? a) methanolb) sugarc) baking soda