Measurements taken with a spectrometer require a __ to eliminate background readings from components other than what is being measured in the sample. Select one: a. sample b. replicate c. treatment d. blank

How many Sodium ions are in 156 moles of Sodium ions? 9.39times 10^23 Sodium ions 2.59times 10^-24 Sodium ions 6.022times 10^23 Sodium ions 1.56 Sodium ions

Which of the following alcohols will be used in this lab? Butanol Propanol Ethanol Methanol

Acidic dyes work best in low pH environments. are used for staining negatively charged molecular structures. are negatively charged and work best at low pH. are lipid soluble. are negatively charged.

How many protons does carbon have? 40 39.09 6 12

11. [Periodic Table and Periodic Law] Which of the following elements has the greatest tendency to attract electrons in a chemical bond? A. Carbon B. Oxygen C. Fluorine D. Nitrogen