Using the wavelength information provided in the table, what is the color of the light with photon energy of 3.3 ✕ 10-19 J? ColorWavelengthRed647 – 760 nmOrange585 – 647 nmYellow575 – 585 nmGreen491 -575 nmBlue424 – 491 nmViolet300 – 424 nm

A sample of C4H10(g) is placed in a rigid vessel with a movable piston. The volume of the gas is reduced by moving the piston downward while the temperature is maintained at 25°C, as shown. The pressure of the gas versus its volume is plotted in the graph. Diagram showing two cylinders containing the gas C₄H₁₀ (butane) at different volumes. The left cylinder has a volume of 0.50 L and the right cylinder has a reduced volume of 0.050 L with the piston pushed down further, indicating a compressed state of the gas. The figure shows a graph in a coordinate plane. The horizontal axis is labeled “Volume, in liters,” and the numbers 0.0 through 0.6, in increments of 0.1, are indicated. The vertical axis is labeled “Pressure, in atmospheres,” and the numbers 0.0 through 4.0, in increments of 0.5, are indicated. The graph consists of a line segment and a curve. The line segment begins at the point with coordinates 0.05 comma 2.45 and moves horizontally to the right until it ends at the point with coordinates 0.21 comma 2.45. The curve begins where the line segment ends, and moves downward and to the right. It passes through the points with coordinates 0.3 comma 1.7 and 0.4 comma 1.25, and ends at the point with coordinates 0.5 comma 1.0. Which of the following best accounts for the pressure in the vessel remaining constant as the volume decreases below 0.21 L?

2 MnO4-(aq) + 10 Br-(aq) + 16 H+(aq) → 2 Mn2+(aq) + 5 Br2(aq) + 8 H2O(l) How many electrons are transferred in the reaction represented by the balanced equation above?

M+ is an unknown metal cation with a +1 charge. A student dissolves the chloride of the unknown metal, MCl, in enough water to make 100.0 mL of solution. The student then mixes the solution with excess AgNO3 solution, causing AgCl to precipitate. The student collects the precipitate by filtration, dries it, and records the data shown below. (The molar mass of AgCl is 143 g/mol.)   Mass of unknown chloride, MCl    0.74 g Mass of filter paper    0.80 g Mass of filter paper plus AgCl precipitate    2.23 g   Which of the following diagrams best represents the AgNO3 solution before the reaction occurs?   Note: water molecules are represented by the symbol   A figure shows two small circles attached to two large circles on its either side.

Which of the following particle diagrams best represents the products when four molecules of H2O2(l) decompose into water and oxygen gas at room temperature? For each of the following answer choices, a key indicates that a shaded circle represents a Hydrogen atom, H, and an unshaded circle represents an Oxygen atom, O.

A student performed a fractional distillation of a mixture of two straight-chain hydrocarbons, C7H16 and C8H18. Using four clean, dry flasks, the student collected the distillate over the volume ranges (A, B, C and D) shown in the graph below. Over what volume range should the student collect the distillate of the compound with the stronger intermolecular forces? The figure presents the graph of a line with the origin labeled O. The horizontal axis is labeled Volume, in milliliters, and the numbers 5 through 50, in increments of 5 are indicated. The vertical axis is labeled Temperature, in degrees Celsius, and the numbers 20 through 140, in increments of 20, are indicated. The line has data points along it. There are vertical gridlines at approximately 8 milliliters, 21.5 milliliters, 27.5 milliliters, and 42 milliliters. Between each vertical gridline the range is labeled. The labels are as follows: A, B, C, and D. The data of the line is as follows. Note that all values are approximate. The line begins in range A at 1 milliliter, 15 degrees Celsius and moves steeply upward and to the right. It reaches the point 8 milliliters, 99 degrees Celsius and moves horizontally to the right through range B. It reaches the point 23 milliliters, 99 degrees Celsius, in range C, and then moves upward and to the right. It reaches the point 27.5 milliliters, 125 degrees Celsius, and moves horizontally and to the right through range D. The line ends at 44 milliliters, 125 degrees Celsius.

2 SO2(g) + O2(g) → 2 SO3(g)   A mixture of gases containing 0.20 mol of SO2 and 0.20 mol of O2 in a 4.0 L flask reacts to form SO3. If the temperature is 25ºC, what is the pressure in the flask after reaction is complete?

CCl4(g) deviates more from ideal gas behavior than CH4(g) does. Which of the following statements best explains this observation?

The pH of a solution prepared by the addition of 10. mL of 0.002 M KOH (aq) to 10. mL of distilled water is closest to

The figure presents C O gas molecules and O 2 gas molecules. There is a key that shows a shaded circle represents C, and an unshaded circle represents O. In the mixture there are 4 C O molecules and 3 O 2 molecules.   A mixture of CO(g) and O2(g) is placed in a container, as shown above. A reaction occurs, forming CO2(g). Which of the following best represents the contents of the box after the reaction has proceeded as completely as possible?