Chapter 7a D2L Homework

3379 Which of the following Homeowners policies provides coverage for damage caused to a roof by the weight of accumulated ice and snow? a. HO-0 Form b. HO-1 Form c. HO-2 Form d. HO-4 Form

Appendix A. Notes on Molecular Polarity To determine the polarity of a molecule, both the bonds present and the overall shape of the molecule should be considered. Two or more polar bonds may cancel each other out leading to a nonpolar molecule. Extension Activity _ Enrichment Dipole-Dipole Forces Hydrogen Bonding Polar or London Substance Nonpolar Dispersion Forces H-F: ннн H-C-C-C-H H HH HNH

1) Using the formulas in this lab module for various shapes, calculate the volume of a solid ball made of concrete whose radius from core to outward point is 45mm. Show all work. smulov sr heqxe how lle won2 lig

Based on the kinetic molecular model, solids usually have higher densities compare two liquids. However, ice , a solid form of H2O floats on liquid water which means ice is less dense than water. What do you think is the reason for this phenomenon? What is the biological significance of this concept?

Safari 7:34 AM Sun Oct 1 Patterns in Natur...ule 3 assignment 2 Home LE Calibri Bold Italic (E Patterns in Nature Module 3 Assignment 1. Why is glass not a mineral? Insert Draw Layout Review View References BI ●●● U aA 2. Describe several ways in which minerals can form. Directions: Answer each question as thoroughly as possible. Please make sure all of your answers are in your own words. 3. Name two different patterns of crystal growth. Define each one. ili 4. What is a geode? Which type of crystal growth do geodes exhibit? ㅁㅇ =✓ 5. If a mineral is very hard, which type of chemical bonds would that mineral most likely have in its atomic structure, and why? A 19% 0 :

A substance has a low melting point. It does not conduct electricity either when melted or in the solid. It is most likely: 1. Chlorine (Cl₂) 2. Diamond (C) 3. Copper (Cu) 4. Calcium oxide (CaO) 5. Graphite (C) 02 O O لا 4 5 0 1

KINDLY WRITE IN GOOD PENMANSHIP PLEASE BECAUSE SOMETIMES I CAN'T UNDERSTAND THE WRITINGS.  CHEMISTRY OF METALS IS THE TOPIC ACT G-1

What is the melting point of the substance modeled by this heating curve? F. 150 135 120 E 105 90 75 В C 60 45 30A 15 Heat (kJ) Temp. (°C)

Choices: I only II only III only I and II II and III I and III I, II, III None of the above   5. SURFACE TENSION: I. A decrease is due to the weakening of the hydrogen bonds of water molecules II. It is increased when a surfactant is added III. Soap lowers surface tension of water resulting to the shrinkage of molecules on the surface 6. SAPONIFICATION: I. Can be carried out with HCl II. NaOH undergoes hydrolysis III. Its principle is used to determine the number of milligrams of KOH required to neutralize the fatty acids from the complete hydrolysis of 1g of fat 7. HYDROGENATION: I. Involves hydrogen addition across carbon-carbon double bonds II. The removal of a double bond results to an increase in melting point III. Favors the absorption of vitamins in the structure 8. RANCIDITY: I. Oxygen acts as an oxidizing agent at carbon to carbon double bonds II. The products are glycerol and carboxylic acids III. Can be carried out by a certain…

Heat of vaporization is the amount of heat required to evaporate a solid. evaporate a liquid. melt a solid. condense a vapor. X   The earth's crust contains. core, mantle, and atmosphere. X lithosphere, hydrosphere, and atmosphere. troposphere, stratosphere, and ionosphere. hydrosphere, geosphere, and stratosphere.

True or false? SEM can investigate the crystalline structure of an object?

Of C2H5OH and C3H5(OH)3 the one expected to have the higher vapor pressure is ________, and the one expected to have the higher boiling point is ________. Express your answers as chemical formulas separated by a comma.