Mole fraction Study guides, Class notes & Summaries

molarity correct answers mol solute/L solution molality correct answers mol solute/kg solvent mole fraction correct answers mol solute/(mol solute + mol solvent) % by mass correct answers mass solute/mass solution X 100% % by volume correct answers volume solute/volume solution X 100% % mass to volume correct answers mass solute(g)/volume solution(mL) Gibbs Free Energy correct answers G=H-TS Hsolution correct answers Hsolute + Hsolvent + Hmix endothermic when Hendo correc...

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...

P=F/A - ANSWER-pressure equals force divided by area Boyle's Law - ANSWER-they volume of a fixed quantity of gas at constant temperature is INVERSELY proportional to the pressure Boyle's Law equation - ANSWER-PV=K Charles's Law - ANSWER-The volume of a fixed amount of gas at a constant pressure is directly proportional to its absolute temperature Charles's Law Equation - ANSWER-V/T=K Avogadro's Law - ANSWER-The volume of a gas at constant temperature and pressure is directly ...

Chapter 3 Fossil Fuel Resources and Use 3.1 A person's primary energy needs are supplied exclusively by burning oil (with an energy content of 3.85 × 107 J/L). If a person's average power consumption is 12 kW, how long would it take that person to use one barrel of oil (158.97 liters)? Solution The power 12 kW is the same as energy consumed at a rate of 12,000 J/s. Thus the amount of oil required per second is (12,000 J/s)/(3.85 × 107 J/L) = 3.12 × 10–4 L/s. Thus to consume...

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...

CHEM 103 MODULE 1 EXAM 2023/2024 MODULE 1 EXAM Question 1 Click this link to access the Periodic Table. This may be helpful throughout the exam. 1. Convert 845.3 to exponential form and explain your answer. 2. Convert 3.21 x 10-5 to ordinary form and explain your answer. 1. Convert 845.3 = larger than 1 = positive exponent, move decimal 2 places = 8.453 x 102 2. Convert 3.21 x 10-5 = negative exponent = smaller than 1, move decimal 5 places = 0.0000321 Question 2 Click this link to...

AP Chemistry Cumulative Test Review questions and answers Mole Fraction ️️The number of moles of a particular substance compared to the total number of moles. Xa=mole a/mole a + mole b Percent Error ️️-Accepted value-experimental value/accepted value -Multiply found # by 100 Isotope ️️-Elements that have different numbers of neutrons -Atomic Mass-Protons = Neutrons Molecular Formula ️️A chemical formula that indicates the actual number of atoms of each element in one ...

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...

Highest: Nh3 SbH3 AsH3 PH3 The hydrides of group 5A are NH3, PH3, AsH3, and SbH3. Arrange them from highest to lowest boiling point. Dispersion What is the strongest type of intermolecular force present in H2? Co2 Identify the compound that does not have dipole-dipole forces as its strongest force. 1 and 2 Which of the following must be overcome during the boiling of acetonitrile, CH3CN? 1. dispersion forces 2. dipole-dipole forces 3. hydrogen bonds I>III&gt...