How is the equilibrium affected by an increase in volume? It shifts to the left. O It shifts to the right. It has no effect. O It cannot be determined.

4.  A solution is prepared by taking a clean and dry 50.00 mL volumetric flask.  Some sucrose (Mm 342.2 g/mol) is added to the flask with the following mass measurements recorded: mass of empty volumetric flask:  142.88 g mass of weighing dish + sucrose: 29.83 g mass of weighing dish after adding sucrose to volumetric flask: 24.62 g Some water is added to the flask, the solution stirred until all the sucrose is dissolved.  Then water is added carefully to the mark on the flask.  The filled flask is then weighed again. mass of filled volumetric flask:   187.30 g What is the mole fraction of water?  Answer to 3 decimal places.

John and Eli do a reaction with the goal to prove the law os conservation of mass. In the reaction, they place 50.00 g of acetic acid (CH3COOH) in a clean, dry ziploc bag and then add 5.00 g of baking soda (NaHCO3). The products of the reaction include sodium acetate, carbon dioxide, and water. In trial 1, Eli immediately seals the bag upon addition of the baking soda and waits until the bubbling comes to a halt. John weighs the closed bag with all contents and records mass in the table. For trial 2, John and Eli repeat the procedure but forgot to seal the bag. Their results are shown in the table below. 1. Calculate the theoretical mass of the open bag. 2. Are atoms/mass conserved in each of the reactions? 3. Provide mathematical evidence to explain your reasoning that atoms/mass are/are not conserved.

Molecular oxygen (O2) can be converted to ozone (O3) in the presence of an electrical spark, according to the equation below: 3 O2 (g) -> 2 O3 (g) Which of the statements below best describes this transformation? This is a phase change. This is a physical change. This is a chemical change.

Automobiles are often implicated as contributors to global warming because they are a source of the greenhouse gas CO2. How many pounds of CO2 would your car release in a year if it was driven 110. miles per week? Gasoline is a complex mixture of hydrocarbons. In your calculations, assume that gasoline is octane (molecular formula C8H18) and that it is burned completely to CO2 and H2O in the engine of your car. Also assume that the car averages 27.3 miles per gallon and that the density of octane is 0.703 g cm-3.

When NO(g) reacts with O2 (g) according to the following reaction, 57.1 kJ of energy are evolved for each mole of NO(g) that reacts. Complete the following thermochemical equation. 2NO(g) + O₂(g) → 2NO2(g) AH = ? ΔΗ = kJ

CH3CH2CH2CH,CI (1 mole) AICI3, heat