P Block - Group 16 Questions and Answers

Which of the following electron configurations represents the element with the highest electronegativity Choose 1 answer B 1822s22p 1s 2s22p 1822s22p638

Which of the following describes the result for 2 methyl 1 propanol on the 2 4 dinitrophenylhydrazine DNPH test A purple solution with precipitate An orange solution with precipitate A red solution A clear orange solution

HgO s FeCl3 aq CH OH Al s CaCl aq NH3 g H PO4 aq Na s Mg3N s C8H18 1 Hg 1 O g NaOH aq O g Cu NO3 2 aq Al NO3 3 aq 25 Fe OH 3 s O g NaCl aq CO g H O g Ca3 ASO4 2 s Cu s K3ASO4 aq N g H g Ba OH aq Ba3 PO4 2 s Cl g NaCl s H O 1 Mg OH aq NH3 g 16 CO g KCl aq H O 1 18 H 0 1 Combination

Explain the difference in functional groups between an alcohol and a carboxylic acid An alcohol contains one or more hydroxyl groups whereas a carboxylic acid contains a hydroxyl group attached to a carbonyl group a carboxyl group whereas a carboxylic acid contains a hydroxyl group a carbonyl group whereas a carboxylic acid contains a carboxyl group attached to an amino group only a single hydroxyl group whereas a carboxylic acid contains a carbonyl group

Which of these elements can participate in hydrogen bonding Nitrogen Fluorine Oxygen Chlorine Hydrogen

Vapor pressure is the point where evaporation and condensation reach equilibrium O True O False

19 80 Enzyme levels in blood are often elevated in various dis ease states Which enzyme gives the earliest indication of a heart attack Which enzyme is used to confirm a heart attack after several tests over several days Enzymes in Medical Diagnosis p 601 wwwy be monitored under standard

10 Board How many grams of oxygen gas 16 g mole would be present in a cylinder with a radius of 50dm a height of 15m stored at 125C and 2 5 atm pressure 1 Point 108 496 grams of oxygen 135 632 grams of oxygen O 542 544 grams of oxygen

3 34 grams of oxygen gas are stored in a 1 5 L balloon If more oxygen is added such that the volume is 9 19 L how much gas in moles was added

A reaction produces 3 45mol of oxygen gas If the pressure in the room is 1 25atm and the temperature if 427 74 C what volume of oxygen gas was produced in liters Reaction 6CO2 g 6H O g C6H12O6 1 902 g

2 Consider the following balanced thermochemical equation for the decomposition of sulf trioxide 2SO3 g 2S s 302 g a Is this an exothermic or endothermic reaction b What is AHrrn for the reverse reaction IL AHran ata with oveose S2 790 4 kJ

9 The equilibrium constant is given for one of the reactions below Determine the value of the missing Kc 2SO2 g O2 g 2 SO3 g SO3 g 1 2 O2 g SO2 g Kc 1 7 x 106 Kc 22 a 3 4 102 b 8 5 12503 2502 02 KC 2 1 T 7x c 1 3 x 103 d 7 7 x 10 4 e 8 5x10

Cognitive development: Around 7 years old to 11 years of age, the child understands that some things that have been changed can be returned to their original state. For example, water can be frozen and then thawed to become liquid again. This shift in cognitive development is referred to as: Seriation. Conservation Reversibility Classification

Rank the following ions in order of decreasing radius: 02-S2,Se².Te², and Po2. Use the periodic table as necessary.

3PbO₂ + Br- + 6H+ ---> BrO3- + 3Pb2+ + 3H₂O In the above reaction, the oxidation state of lead changes from _ to _. How many electrons are transferred in the reaction?

How many non-bonding electrons are on the central atom in the optimized Lewis structure of OBr2, in which the formal charges are minimized?

YOU MUST SUBMIT WORK FOR THIS PROBLEM. Draw the Lewis structure for H₂CS. You must show adding up the valence electrons. Determine the following for the structure: •Molecular Shape • Bond Angle • Polarity

SO3 has several resonance structures. Consider one of these structures in which all the atoms follow the octet rule. For this particular resonance structure, which of the following statements is (are) true? Select all that apply to get full credit. The molecular geometry or shape of SO3 is trigonal planar. There is one set of lone pair on the central sulfur atom. The central sulfur atom forms 2 double bonds with the oxygen atoms. The central sulfur atom forms 3 single bonds with oxygen atoms.

89.3 grams of bismuth (III) sulfate reacts with 33.5 grams of calcium chromate. Predict the products, write the complete reaction equation, balance, and calculate the mass of the aqueous product.

Elemental sulfur is yellow in color and has an unpleasant odor similar to rotten eggs. Answer the following questions about sulfur. How many valence electrons? What is the valence shell? Name another element that has a similar dot diagram.

Rank the following series of molecules or ions in order of decreasing bond energy using their bond order to predict relative magnitude: oxygen difluoride: F- OF, oxygen: O2, carbon monoxide: CO Rank from highest to lowest bond energy.