Molality Study guides, Class notes & Summaries

CHEM 103 Notebook entry for lab 7 _Molality Colligative properties-Top score-2023-2024

CHEM 1212: Final Exam Questions and Answers Colligative Properties - CORRECT ANSWER-properties of solution, such as freezing point and boiling point, which depend on the concentration of solute particles dissolved in the solvent Freezing Point Depression Equation - CORRECT ANSWERMolality - CORRECT ANSWER-moles of solute per kg of solvent Molality= - CORRECT ANSWERWhat is the definition of colligative properties? (Antifreeze) - CORRECT ANSWERproperties of a solution that depend on the...

QUESTIONS AND ANSWERS

CHEM 103 Notebook entry for lab 7 _Molality Colligative properties-Top score-2023-2024

In terms of solution concentration, which of the following terms would be applied to the representation below? m = moles/kg of solvent - correct answer molality The parts of a binocular bright-field microscope would include all of the following: - correct answer Body tube, Light Base, Eyepiece Diopter adjustment, Interpupillary distance adjustment, Revolving nosepiece, Objectives, Stage with side clips, Condenser and iris diaphragm, Light, Arm, Coarse adjustment knob,, Fine adjustment ...

Final Certification for CHEM 1212 Exam 2 Q&A What is Molarity and the units for molarity? - CORRECT ANSWER-M=moles of solute/liters of solution, units are mol/liter What is Molality and the units for molality? - CORRECT ANSWER-m= moles of solute/moles of solvent, units are mol/kg What is Mass Percentage or Weight Percent and the units for mass percentage or weight percent? - CORRECT ANSWER-Mass %= (mass of solute/total mass of solution) x 100 What is Mole Fraction and the units for...

What molality of pentane solution is obtained by dissolving 5.0 g pentane, C5H12, in 245.0 g hexane, C6H14? Enter your answer with two decimal places and no units. Molar mass pentane: 72.15 g/mol Molar mass hexane: 86.18 g/mol - 0.28 5 g pentane x (1 mol/ 72 g)= 0.069 mol pentane 245g > .245 kg hexane 0.069 mol/ .245= 0.28 If an aqueous CsCl solution is 7.28% CsCl (by mass) and has a density of 1.05 g/mL at 20.°C,what is the expected boiling point of the solution? Kb = 0.51°C/m for ...

In terms of solution concentration, which of the following terms would be applied to the representation below? m = moles/kg of solvent - correct answer molality The parts of a binocular bright-field microscope would include all of the following: - correct answer Body tube, Light Base, Eyepiece Diopter adjustment, Interpupillary distance adjustment, Revolving nosepiece, Objectives, Stage with side clips, Condenser and iris diaphragm, Light, Arm, Coarse adjustment knob,, Fine adjustment ...

CHEM 2 LAB MIDTERM QUESTIONS & ANSWERS 2024 percent error equation - ANS-experimental value-accepted value/accepted value x 100 molarity equation - ANS-moles of solute/liters of solution molality equation - ANS-moles of solute/kg of solvent dilution equation - ANS-M1V1=M2V2 general form for a rate law - ANS-rate = k[A]^m 4 DNA bases - ANS-A

Strong electrolytes: ciate almost completely into ions in solution b. only yield a small fraction of ions in solution c. are always dissolved ionic compound d. Can not be covalent compounds correct answer: a. dissociate almost completely into ions in solution Hexane is commonly used in labs as solvent for non polar compounds. what is the molality of 22.3 mg of vitamin D (C27H44O, 384.6 g/mol) in 50 mL of hexane? Hexane has a density of 0.661 g/mol correct answer: 1.75 X 10^-3 m A...