What is the formula unit for an ionic compound

containing only barium (Ba) and sulfate (SO4) ions?

Does every change from one form of energy to another form?

What is the mass number of the isotope zinc - 65? a. 30 b. 65 c. 35 d. 95

How does a scientist answer a scientific question? a. by guessing the right answer b. by asking others for their opinions c. by observing and measuring d. by finding the answer in a book

How many grams of potassium reacts with 16 grams of oxygen to produce 94 grams of potassium oxide

Suppose of lead (II) acetate is dissolved in of a aqueous solution of ammonium sulfate. Calculate the final molarity of acetate anion in the solution.

Which of the following actions will not increase the rate at which a solid dissolves in a liquid? A. increasing the surface area of a solid B. stirring the solid and the liquid C. increasing the amount of the solid D.

Does the amount of heat absorbed as 1 kg of saturated liquid water boils at 100°C have to be equal to the amount of heat released as 1 kg of saturated water vapor condenses at 100°C?

F. Protection of the body from infectious organisms is accomplished by which of these tissues? a) bone; b) muscle; c) nerve; d) blood

A compound that is composed of molybdenum (Mo) and oxygen (O) was produced in a lab by heating molybdenum over a Bunsen burner. The following data was collected: Mass of crucible: 38.26 g Mass of crucible and molybdenum: 39.

Which of the following elements has electrons in the 3d sublevel?