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Unknown Cmeas= [X] mg/L in run flask; DF=250. Compute Ca in digest (mg/L). (Report answer to the nearest whole number)

If the ISTD peak is integrated inconsistently (different baselines across runs), the ratio method can still be valid without correction.

If Cmeas=[C] mg/L came from I=?, m=[m], b=[b], verify I from I=mC+b. (Report to a whole number)

Which observations support the conclusion “Unknown 1 is cellulosic/cotton-type”?

What is the primary purpose of using an internal standard (Tridecane) in this GC experiment?

The internal standard in this experiment is Tridecane, which is added to both calibration standards and the __________ to correct for injection variations.

A student reports mg Ca/tablet but forgot DF₂. The reported value will be:

Your CCV is 5.00 ppm and reads [X] ppm. Percent recovery and interpretation (pass/fail) if limits are 90–110%? (Report to a whole number)

The response factor is calculated by comparing the peak area of Dodecane to the peak area of the __________.

Why are the calibration standards designed as low/mid/high (250/500/1000 µg/mL) rather than a single-point calibration?