What is the main component of the earths ancient atmosphere?

Your two Barium samples, BaCl2 and BaSO4 gave the same flame color. Would you say the color is due to Ba or the anions, Cl and SO4? Explain your answer.

How come a pufferfish has spines?

Define ionic bond, covalent bond, hydrogen bond, molecular weight, and mole

What was concluded about the structure of the atom as the result of the gold foil experiment? (1) A positively charged nucleus is surrounded by positively charged particles. (2) A positively charged nucleus is surrounded by mostly empty space.

You have 1 mole of a gas at STP. If you apply the ideal gas law what is the approximate volume of the gas? A) 22.4 L B) 0.5L C) 8.31L D) 1L

True of false an unbalanced force cannot change the direction in which an object is moving

What are the primary atoms that make up the scents that we smell?

What happens if sodium sulfide is added to iron (II) sulfide?

What is the lowest energy level that contains d orbitals? O A. 4 O B. 1 O c. 3 O D. 2

What is the nature of the Ca-Cl bond in a molecule of calcium chloride (CaCl2) if the electronegativity value of calcium is 1.0 and that of chlorine is 3.167 O A nonpolar covalent B. moderately polar covalent C.