which scientist proposed a modification to the theory of atomic number that esablished electron energy levels or shells

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.

if a person is suffering from a severe infection caused by bacteria which solution mighr a doctor propose

What happens to oceanic crustand mantle after subduction?

Try these: 13. How many moles of Al₂ (SO4), are there in 50g of Al2 (SO4) 3? 14. How many moles of Fz are there in 72 g of Fz? 15. How many moles of H₂O are there in 144g of H2O? 16. How many moles of He are there in 2g of the?

The funnel shaped area at a volcanos vent is called a

A reaction starts with 20.0 grams of lithium hydroxide (LiOH) and produces 31.0 grams of lithium chloride (LiCl), what is the percent yield of lithium chloride (LiCl) ? * LiOH + KCl - LiCl + KOH A) 64.5% B) 88.6% C) 81.5% D) 92.8%

You aren't sure if your pH meter needs to be calibrated, so you put it in a buffer solution that has a known pH of 7. You take four separate readings of the solution with the pH meter. The meter reports the pH as 5.5, 8.6, 6.3, and 9.4.

Can you explain and read this equation 2Mg + 02 - - 2MgO

The label of a gas cylinder has come off in your laboratory. You know that only one species of gas is contained in the cylinder, but you do not know whether it is hydrogen, oxygen, or nitrogen.

Give two example of compound that decompose to give off oxgyen gas