Mole fraction Study guides, Class notes & Summaries

Chemical Engineering Thermodynamics Exam (2023) | Questions & Answers (Rated +) Chemical Engineering Thermodynamics Exam (2023) | Questions & Answers (Rated +) Maximum work that could be secured by expanding the gas over a given pressure range is the__________work. - ANSWER - isothermal Internal energy change of a system over one complete cycle in a cyclic process is - ANSWER - zero Heating of water under atmospheric pressure is an __________ process. - ANSWER - isobaric Van Laar eq...

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...

Subscript - A number in a chemical formula that tells the number of atoms in a molecule or the ratio of elements in a compound Law of conservation of mass - mass is neither created nor destroyed during ordinary chemical reactions or physical changes Mole ratio - fraction formed from the coefficients in a balanced chemical equation. Avogadro's Number - number of representative particles in a mole, 6.02 X 10^23 Products - The elements or compounds produced by a chemical reaction. On the rig...

Interest correct answer: amount of money earned for the use of the borrowed capital; (borrower) amount of money paid for the capital; (lender) income generated by the capital which he lent Simple Interest correct answer: interest where only the original principal bears interest which varies directly with time Ordinary simple interest correct answer: computed on the basis of the banker's year 1 year = 12 mos. 1 mo. = 30 days 1 year = 360 days Exact Simple Interest correct answ...

Analytical Balance - 5 sig figs or 4 if unstable and a line over the 4th digit Thermometer - Three sig figs (20.5) graduated cylinder (50mL) - 3 Sig Figs (50.2) Graduated Cylinder (10mL) - 4 sig figs (10.25) volumetric flask - 5 sig figs Buret - 4 sig figs (27.22) Pipet - 4 sig figs (.02500L) adding and subtracting sig figs - least number of decimal places added or subtracted - 12.2 + 5.44 = 17.6 multiplying or dividing sig figs - the least number is the number of sig figs you can have ...

General Chemistry 2 ACS Final Review 25 Questions with Verified Answers What are the 4 types of intermolecular forces listed from weakest to strongest? - CORRECT ANSWER London dispersion, dipole-dipole, hydrogen bonding, ion-dipole What effect does IMFs have on surface tension? - CORRECT ANSWER surface tension increases as strength of IMF increase What effect does IMFs have on viscosity? - CORRECT ANSWER viscosity increases as strength of IMFs increase What effect does IMFs have on b...

Base Unitscorrect answerThe name of certain physical objects (Ex: meter, gram, second, temperature) Derived Unitscorrect answerDefined in terms of the base unit (Ex: volume, area, density, velocity) Mass fraction (wi)correct answerThe mass of this substance divided by the total mass Mole Fraction (Xi)correct answerthe moles of this substance divided by the total number of moles Average molecular weight (MW)correct answerTotal mass/Total moles or sum of each mole fraction x each molec...

General Chemistry II Final Exam (ACS) UVU 273 Questions with Verified Answers If the pressure of a gas is increased at constant temperature, the volume ___. - CORRECT ANSWER Decreases If the pressure of a gas is decreased at constant temperature, the volume ___. - CORRECT ANSWER Increases If the volume of a gas is decreased at constant pressure, the temperature ___. - CORRECT ANSWER Decreases P ? T ? V ? - CORRECT ANSWER Pressure does the opposite of volume. Which of the following...

What does sensitivity mean? - discriminate between small differences in concentration What does selectivity mean? - degree which method is free from interference of other species What does detection limit mean? - min. concentration/ mass of analyte detected with known confidence level What are the criteria for selecting a method? - precision, bias, sensitivity, detection limit, concentration range, and selecitivity What are the axis for the standard addition method? - absorbance versus sta...

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...