Using Cstock = [C] ppm, find V₁ to prepare [V2] mL of a [C2] ppm Ca standard. (Report to 4 decimal places)

If standards are in 5% HNO₃ but unknowns are in water, bias may occur.

Of the many liquid antacids available, those consisting of either [m] or [a] alkalinizing agents are preferable to antacids containing [c] salts, which have been shown to lead to a secondary increase in gastric acidity. 

Which are acceptable corrective actions if method blank is elevated? (Select all that apply)

The term for a fiber picked up from an intermediate surface before transfer is ________ transfer.

You need [V] mL of a [C1] ppm Ca standard from a [C2] ppm stock. Calculate the required stock volume (mL). (Report to 4 decimal places)

If duplicates are very precise (low RPD) but biased versus label claim, the likely issue is random error.

When should antacids be taken? 

The highest-sensitivity Ca line is always the best choice for quantitation.

How many courses are you taking this semester at STC?