Part 1- Multiple Choice (30 points) solids and/or hydrogen bonds forces, London
ID: 704431 • Letter: P
Question
Part 1- Multiple Choice (30 points) solids and/or hydrogen bonds forces, London dispersion forces, a. Metallic d. Molecular network c. Metallic and covalent-network 2. A student dilutes 50.0 mL of a 0.10 mon solution of HC? to 0.010 mon by adding water, which statement is true? . The total amount of solute remains the same. b. The volume of the solution remains the same C. The total amount of solute decreases.The volume of the solvent remalins the same d. The volume of the solvent remains the e. None listed is correct 3. Which of the following statements is TRUE for gases? i. The temperature of a gas is inversely proportional to its pressare. ii. The volume of a gas is directly proportional to the pressure in torr iii. The pressure of a gas is due to collisions of the gas molecules a. i only b, ii only d.iand il only i an i only If the same amount of heat is added to 80.0 g of each of the common substances below, which metal will undergo the largest temperature change? 4. Specific heat (Jg°C) Au(s) 0.13 Fe(s) 0.45 AKS) 0.90 Cu(s) 0.38 C(s) 0.71 a. Au(s) b. Fe(s) c. Cu(s) d. C(s) e. Als) Which of the following is not a postulate of the kinetic-molecular theory of gases? 5. All gases consist of atoms and molecules moving randomly in all directions at various speeds b. The average kinetic energy of gas molecules increases as the t emperature increases from other gas The volume of a gas molecule is negligible when compared to the space that separates it molecules. d. There are no attractive or repulsive forces between gas molecules e. Gas molecules will eventually stop colliding due to the energy lost in each collision 6. A heating curve illustrates The changes in the temperature and physical state of a substance as it is heated a. b. What happens to the heat applied as the temperature is increased What happens to the particles of a substance as it is heated. c. d. The chemical changes that occur as the substance is heated. e. What a substance looks like as it is heated An ionic compound has a solubility of 30 g per 100 mL of water at room temperature. A solution containing 70 of the compound in 300 mL of water at the same temperature is: 7. 9) suspension a) saturated d) b) unsaturated e) colloid atedExplanation / Answer
Solved the first two problems since MCQ type, as per Chegg guidelines ,post one problem per posted question
1) The correct answer is Option d
The molecular bonds will form dipole-dipole interactions, london dispersion and hydrogen bonds
2) The correct answer is Option a
The total amount of solute is irrespective of dilution, since the number of moles of solute will be fixed which is
number of moles of HCl = volume of solution (in L) * molarity = 50/1000 * 0.1 = 0.005 moles