If volume remains the same while the mass of a substance the density of the substance

Nonmetal halogen family atmoic mass 35

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.

Which atom or ion is the largest? a. k b. k+ c. ca d. ca2+ e. li