Which of the following instruments has the highest pitch?

bass drum

flute

trombone

Why acids and base solutions lead to electricity?

Which of the following is not a pure substance an element, molecule, compound, or mixture?

Some properties of suspensions and colloids are similar because

6) How many valence electrons does an atom of Cu possess? ОА) 2 Ов) 9 Ос) 11 OD) 3 OE) 1

Conduction can occur within a single substance, but parts of the substance must have which property? a. different temperatures B.) different textures C.) different particle sizes D.) different colors

Name the compound K3 (PO4) 3

How many grams of silver chloride (AgCl) can be produced if you start with 12.5 grams of barium chloride (BaCl2) ? 2AgNO3 + BaCl2 = = > 2AgCl + Ba (NO3) 2

Chlorine gas can be prepared in the laboratory by the reaction of hydrochloric acid with manganese (IV) oxide. 4 HCl (aq) + MnO 2 (s) ⟶ MnCl 2 (aq) + 2 H 2 O (l) + Cl 2 (g) 4HCl (aq) + MnO2 (s) ⟶MnCl2 (aq) + 2H2O (l) + Cl2 (g) A sample of 43.

Calculate how many moles of glycine are in a 160.0-g sample of glycine. express your answer using four significant figures.

Which of the following words correctly describes CO2? Select all that apply A. Its a substance b its a compound c its a element D its a mixture