the compound sodium sulfide consists of a ratio of two sodium ions (Na+) to one sulfide ion (Sa-). write the chemical formula for this compound

Which of these properties, used alone, would be least useful in identifying most minerals? a. color b. luster c. streak d. density

Which of the following is true for the actual yield of a reaction? it is always calculated as a ratio. it is the yield from the excess reactant. it is the yield from the limiting reactant. it is always less than the theoretical yield.

Summarize possible ways in which phases of matter could combine to form a solution.