Which of the following BEST explains the relatively low melting point of covalent molecular substances compared to other solids? a. The intermolecular forces between the molecules are weaker compared those exhibited by ionic or metallic solids. b.The "sea" of electrons between the atoms creates relatively weak bonding. c.The differing electronegativities of atoms involved create uneven electron density within the molecule. d.Covalent molecular materials rely on weak electrostatic forces holding the ions together.

Which of the following BEST explains the relatively low melting point of covalent molecular substances compared to other solids? a. The intermolecular forces between the molecules are weaker compared those exhibited by ionic or metallic solids. b.The "sea" of electrons between the atoms creates relatively weak bonding. c.The differing electronegativities of atoms involved create uneven electron density within the molecule. d.Covalent molecular materials rely on weak electrostatic forces holding the ions together.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

-1 R=0.0589 kPa·km -4 Convert R to kJ•m
a serving of Doritos contains 150 total calories of which 70. Calories come from fats in the chips. what percentage of Calories are fat Calories?
CI MEOH heat
80 60 Temperature (°C) 40 20 -20 -40 10 20 30 Time (min) What is happening withthe substance when the line on the graph is flat? The temperature and the energy are held constant while the state of the substance changes. O Only the energy is held constant while the temperature increases. The temperature is held constant while the energy is being used to change the state of the substance. O The substance is at absolute zero.
Hiw Br H₂N
Energy cannot be created nor destroyed, but it can be transferred between a system and its surroundings. The change in internal energy, AU, is positive if the system absorbs energy, and it is negative if the system releases energy. (Figure 1) The total change in internal energy is the sum of the heat, q, and work, w: AU=q+w. igure AU Allgyntem >0 Al system ▼ Part A Classify the following by the sign of AU for the system. Drag the appropriate items to their respective bins. If no definitive classification can be made, drag the item into the bin labeled "Not enough data." ▸ View Available Hint(s) Negative The system expands and the surroundings get hotter Submit ✓ Correct Part B Submit Previous Answers AU- Value Provide Feedback Positive μA The system contracts and the surroundings get colder. A gaseous reaction occurs at a constant pressure of 30.0 atm and releases 57.1 kJ of heat. Before the reaction, the volume of the system was 6.80 L. After the reaction, the volume of the system…
6. Cook t OCH 3 heat
Specific heat is defined as ___- The amount of energy needed to raise the temperature of 1 g of a substance by 1° K - The amount of energy needed to raise the temperature of 1 g by substance of 1° C - The amount of energy needed to raise the temperature of water by 1° C - The amount of energy needed to raise the temperature of a substance by 1° C
A bicyclist is stopped at the entrance to a valley, as sketched below: E dlo D Where would the bicyclist have the highest potential energy? (choose one) v Where would the bicyclist have the lowest potential energy? (choose one) v Where would the bicyclist have the highest kinetic energy? (choose one) v Where would the bicyclist have the highest speed? (choose one) v Would the bicyclist's kinetic energy be higher at D or F? (choose one) Would the bicyclist's potential energy be higher at D or F? (choose one) Would the bicyclist's total energy be higher at D or F? (choose one) Suppose the bicyclist lets off the brakes and coasts down into the valley without pedaling. Even if there is no friction or air resistance to slow her down, what is the farthest point the bicyclist could reach without pedaling? (choose one) v
D.1 Diagram Interpretation | Tm > Tu. Hot H0 T T- Tut T Tut Heat (a) released to surroundings Room Temp Room Temp T Tut E E l Tut Heat (a) absorbed from surroundings ce HO Tt Tu Tut A. Energy released as heat B. Energy absorbed as heat Energy, E Energy, E
Using the data below, calculate AHrxn for the production of acetylene from the reaction between calcium carbide and water. CaC₂ (s) + 2H₂O(1) C₂H₂(g) + Ca(OH)₂ (s) Molecule CaC₂ H₂O C₂H₂ Ca(OH)2 AH°f (kJ/mol) -59.80 -285.8 226.7 -985.2
The average adult human burns 2.00 × 10³ kcal per day in energy. What is this rate in kJ per hour? # 3 69 2.00 × 10³ 80 F3 ADD FACTOR S x( ) SA 4 1000 kcal/day 000 000 F4 0.001 % 5 1 cal 리니! F5 4184 < C 60 days hr ditv F6 2 4.184 = 2.01 * 106 1.15 * 105 kJ/hr kJ RA ANSWER MacBook Air & 7 349 F7 J 13 * 8 F8 24 kcal - RESET 5 9 20.0 min POR DE F9 O F10