Concept explainers
The following problems are related to the topics in this chapter. However, they do not all follow the chapter order and they require you to combine concepts and skills from several sections. These problems will help you increase your critical thinking skills and prepare for your next exam.
Aluminum and chlorine combine to form aluminum chloride. (9.2, 9.3. 9.4, 9.5)
a. How many moles of
b. How many grams of
c. When 13.5 g of Al reacts with 8.00 g of
d. If 45.0 g of Al and 62.0 g of
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EBK BASIC CHEMISTRY
- (9.3, 9.4)Identify the element with the ground state electron configuration of [Ar]4s23d¹04p³. O antimony iron tin arsenicarrow_forward* Describe the difference between the 2 closest packed arangements: hexagonal close-packed and cuo close-packed. (11.3) hexagoral 2lose- packked 8. When silver crystallizes, it forms face-centered cubic cells. The unit cell edge length is 4.087 A. Calculate the density of silver. (11.4) 9. Name and draw an example of the 3 basic ionic crystal structures. (1 1.4)arrow_forward(10.9) Which of the following has a central atom with no nonbonding pairs of electrons in its Lewis structure? O HCN O H₂S O PC13 O BrF3arrow_forward
- (10.8)Which of the following resonance forms of SCN contributes least to its correct structure? (Hint: Assign the formal charge for each atom in all resonance structures.) [:S-C=N:] O b O a Oa and b O C [S=C=N] (b) [:S=C-N:] (c)arrow_forward(9.4) Which of the following elements has the most number of valence electrons? selenium O antimony helium O bariumarrow_forwardHow do answer this? Step by Step Question3.93arrow_forward
- Can you help me with 6.158 to help me understand it?arrow_forwarddoes it compare with the known melting and boiling point? (1) 9. The average kinetic energy of water molecules is a measure of the temperature of water. When the temperature of water remains constant the average kinetic energy of the molecules remains constant, even though the water is being heated by the Bunsen flame. So, energy is being taken in by the water, but it is not being used to increase the kinetic energy of the molecules. 9.1 What type of energy are the water molecules gaining during a phase change? (1) 9.2 Explain your reasoning (to question 9.1) with reference to the kinetic theory of matter. 10. Write the conclusion. (3) [30]arrow_forward(10.6) Classify each of the following bonds as nonpolar covalent, polar covalent, or ionic bond. bond between two fluorine atoms bond between sodium and nitrogen bond between carbon and fluorine [Choose ] [Choose ] ionic polar covalent nonpolar covalent [Choose ]arrow_forward
- In a large building, oil is used in a steam boiler heating system.The combustion of 1.0 lb of oil provides 2.4 * 107 J. Howmany kilograms of oil are needed to heat 150 kg of water from22 °C to 100 °C? (3.4, 3.5)arrow_forward3. (6.20) Using Lewis theory, determine which molecule in each pair is more likely to exist: Given pair of structure Likely to exist SC1₂ or SC13 4. (6.22) Draw the Lewis structure for each of the following ions. Include resonance structures when necessary. Polyatomic Ion NO₂ 5. What are the angles a and b in the actual molecule of which this is a Lewis structure? Molecule Explanation H H H N: H H H :0: 14 H- C -Ö -H H a Lewis Structure (including resonance structures, if necessary) O: a. b a. -CN: a. Explanation b. b.arrow_forward9.38 Classify each of the following as exothermic or endothermic, and give the AH for each: a. C3H8(g) + 502(g) A b. 2Na(s) + Cl2(g) → → c. PCl5(g) + 67 kJ 3CO2(g) + 4H2O(g) + 2220 kJ 2NaCl(s) + 819 kJ PC13(g) + Cl2(g)arrow_forward
- Principles of Modern ChemistryChemistryISBN:9781305079113Author:David W. Oxtoby, H. Pat Gillis, Laurie J. ButlerPublisher:Cengage Learning