A pair of students standardize a sodium hydroxide solution using KHP and obtain the following concentrations: 0.102 8 M, 0.103 1 M, 0.120 0 M, 0.103 0 M, and 0.102 6 M. The students suspect that 0.120 0 M is an outlier. Is 0.120 0 M an outlier and what is the average concentration of the sodium hydroxide solution? Refer to Table 4-6 for critical values of G.

A sample with a uniform chemical composition is a ___________ sample.

Find the  margin of error for the 95% confidence interval  of the following data: (report 3 decimal places) , , ,

Calculate the mass of a heterogeneous mixture containing 139.32 g sand, 34.99 g gravel, and 9.372 g salt. Report the mass with the correct number of significant figures.

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 8.13 3.92 8.19 3.75 8.17 3.84 8.05 3.91 8.21 Calculate the  margin of error for the 95% confidence interval for sample 2 if s→σ.

Which is NOT a general step in the analytical process?

Find the  margin of error for the 99% confidence interval  of the following data: (report 3 decimal places) , , , , , ,  

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 mean of the following data: (report 2 decimal places) , , , , , ,  

__________ chemical analysis is the measurement of how much of a chemical substance is present. __________ chemical analysis is the determination of what is present in a sample.