If an experiment calls for [X] mol CaCO3, how many grams of pure calcium carbonate do we need?

A NaOH solution is standardized using the monoprotic primary standard potassium hydrogen phthalate, KHP (FM 204.22). If 0.698 6 g of KHP requires 43.92 mL of NaOH, what is the NaOH concentration?

Three different bottles of vinegar were analyzed by the same analyst for percentage acetic acid content. The following results were obtained. Bottle no.1 Bottle no. 2 Bottle no.3 3.88 [F] 8.13 3.92 [G] 8.19 3.75 [H] 8.17 3.84 [I] 8.05 3.91 [J] 8.21 How many measurements of sample 2 would have to be taken to reduce the 95% C.I. to 0.0200 ppm? (report 3 decimal places)

A(n) _____________ is used to grind solids into smaller particles.

Find the median of the following data: (report 1 decimal places) [A], [B], [C], [D], [E], [F], [G] 

Find the  margin of error for the 99% confidence interval  of the following data: (report 3 decimal places) [A], [B], [C], [D], [E], [F], [G] 

Find the coefficient of variation of the following data: (report 3 decimal places) [A], [B], [C], [D]

Which practices reflect the safe, ethical handling of chemicals and waste in a laboratory? Before working, familiarizing yourself with safety features of your laboratory Cleaning up spills immediately to prevent accidental contact by the next person who comes along Recycling of chemicals rather than disposing of waste Not eating or drinking in the lab

Find the  margin of error for the 90% confidence interval  of the following data: (report 3 decimal places) [A], [B], [C], [D]

Find the molarity [M] and molality [m] of a 44.0 wt% H2SO4 (FM 98.079) solution with a density of 1.338 g/mL.