CHEM133 (CHEM133)

1. Question: We discussed the different types of intermolecular forces in this lesson. Which is the strongest in CF2H2 ? 2. Question: Water is such a special molecule with some really unique properties. Why is it so unusual? 3. Question: We discussed the different types of intermolecular forces in this lesson, which can affect the boiling point of a substance. Which of these has the highest boiling point? 4. Question: If you have 2.00 x 103 J of energy, what mass (g) of solid butane (C4H10O) ...

1. Question: When comparing Be2 and H2: 2. Question: Atoms that are sp2 hybridized form ____ pi bond(s). 3. Question: The hybridization of the nitrogen atom in the cation NH2+ is: 4. Question: Which one of the following molecules has an atom with an incomplete octet? 5. Question: Nitrous oxide (N2O) is sometimes called "laughing gas". What is the formal charge on the central nitrogen atom in the most favorable Lewis structure for nitrous oxide based on minimizing formal charge overall? 6....

1. Question: Which one of the following is most likely to be an ionic compound? 2. Question: The phosphorus atom in PCl3 would be expected to have a 3. Question: The phosphorus atom in PCl3 would be expected to have a give CH3Cl and hydrogen chloride. 4. Question: How many of the following molecules have no dipole moment? 5. Question: Atoms having equal or nearly equal electronegativities are expected to form 6. Question: Element A has an electronegativity of 0.8 and element B has an electr...

1. Question: What is the volume, in cubic centimeters, of a brick that is 4.0 in × 2.7 in × 8.0 in? 2. Question: A sailor circumnavigated the earth and covered 4,264,000 meters. Express this number in standard scientific notation. 3. Question: The state of matter for an object that has both definite volume and definite shape is 4. Question: How many of the following numbers contain 3 significant figures? 5. Question: In the spring of 2008, gasoline cost £1.029 per Liter in London. On the ...

1. Question: Dry ice (carbon dioxide) changes from a solid to a gas at –78.5°C. What is this temperature in °F? 2. Question: The state of matter for an object that has both definite volume and definite shape is 3. Question: In 1828, the diameter of the U.S. dime was changed to approximately 18 mm. What is this diameter when expressed in nanometers? 4. Question: A piece of antimony with a mass of 17.41 g is submerged in 46.3 cm3 of water in a graduated cylinder. The water level increases t...

1. Question: Suppose a house has a floor area of 2,250 square feet. What is this area in units of square centimeters? 2. Question: A piece of antimony with a mass of 17.41 g is submerged in 46.3 cm3 of water in a graduated cylinder. The water level increases to 48.9 cm3. The correct value for the density of antimony from these data is: 3. Question: Liquid nitrogen boils at –195.8°C. Express the boiling point of liquid nitrogen in kelvin. 4. Question: What is the volume, in cubic centimeter...

1. Question: What is the wavelength of radiation that has a frequency of 5.39 × 1014 s–1? 2. Question: What is the wavelength of a photon of red light (nm) whose frequency is 4.64 x 1014 Hz? 3. Question: Which one of the following sets of quantum numbers is not possible? 4. Question: In Bohr's atomic theory, when an electron moves from one energy level to another energy level more distant from the nucleus: 5. Question: Calculate the wavelength of a neutron that has a velocity of 250 cm/s...

1. Question: If 0.274 moles of a substance weighs 62.5 g, what is the molar mass of the substance, in units of 2. Question: What volume of 18 M sulfuric acid must be used to prepare 1.80 L of 0.215 M H2SO4? 3. Question: What is the molecular mass of Br2? 4. Question: What is the molar concentration of sulfate ions in a 0.150 M Na2SO4 solution? 5. Question: How many moles of hydrogen chloride are contained in a 52.6 g sample of this gas? 6. Question: 1.00 mole of O2 contains the same number ...

1. Question: How many of the following numbers contain 3 significant figures? 2. Question: The melting point of picolinic acid is 136.5°C. What is the melting point of picolinic acid on the Fahrenheit scale? 3. Question: An aluminum can contain 12.0 fluid ounces of liquid. Express this volume in liters. (1 fl oz = 29.6 mL) 4. Question: An aluminum can contain 12.0 fluid ounces of liquid. Express this volume in liters. (1 fl oz = 29.6 mL) 5. Question: In 1828, the diameter of the U.S. dime w...