Determine the volume of KOH consumed by 1-g fat (in ML), Weight of KOH (in g), and Saponification Value (mg KOH) of the given. Kindly base on the given and show solution. Thank you! Given: Volume of Titrant Used (mL) : 11 mL Titrant: HCI Molarity of Titrant: 0.5 M Molarity of KOH: 0.5 M Indicator: Phenolphthalein Volume blank: 20 mL Volume of KOH consumed by 1-g fat = [Volume Blank – Volume Test solution] mL %3D Weight of KOH = molarity of KOH (mol/L) x Volume of KOH used (in L) x Formula Weight of KOH (in g/mol) Saponification Value = mg of KOH consumed by 1-g fat

Scientists can learn a great deal about a community's drug use (both legal and illegal) by analyzing the contaminants in wastewater. In a recent study in New York State, chemists measured the concentration of cotinine, a derivative of nicotine that i produced in the liver and excreted in the urine of tobacco users. The chemists found the average cotinine concentrations in the wastewater stream was 1.43 µg/L. a Ι Ι H- b HH H H-C C-N: C=0: TH HH Jonutis/Shutterstock Revell, Introductory Chemistry, 2e, © 2021 W. H. Freeman and Company Cotinine is slightly soluble in water. Using the structure of cotinine, identify any polar covalent bonds that are present in this substance. C-O C-C C-H C-N

ча OH A OH D B с CHO

The world population is estimated to be 7.4 x 109. Nauru is the smallest island nation and comprises 1.5 x 10-4% of the world population. If the percentage of left-handed people is approximately 12%, estimate the number of left-handers on the island of Nauru.

The most common oxide of vanadium, V205, is used as a catalyst in manufacturing sulfuric acid H2 SO4. The density of vanadium is 6.00 3 g/cm. Express this in SI units ( 3 kg /m³). Density 3 kg/m³