Answer the following question given this paragraph: The water droplets of fog form from water vapor in the air. Fog disappears when the water droplets change back to water vapor. These changes are examples of changes of state. A change of state occurs whenever matter changes from one state to another. Common states of matter on Earth are solid, liquid, and gas. Matter may change back and forth between any two of these states. Q: Fog disappears when the water droplets change back to what? A:
OPTIONS:
- cold vapor
- ice vapor
- solid vapor
- water vapor

Answer: water vapor

Question: Answer the following question given this paragraph: CHAPTER SUMMARY 4.1 Studying Cells A cell is the smallest unit of life. Most cells are so tiny that they cannot be seen with the naked eye. Therefore, scientists use microscopes to study cells. Electron microscopes provide higher magnification, higher resolution, and more detail than. Q: What is considered the smallest unit of life? A:
OPTIONS:
- proteins
- particle
- molecule
- cell
Answer: cell

input with options: Answer the following question given this paragraph: Chemistry is the study of matter and energy and how they interact, mainly at the level of atoms and molecules. Basic concepts in chemistry include chemicals and chemical reactions. Q: Chemistry is the study of matter and energy and how they what? A:
OPTIONS:
- distinct
- division
- interaction
- interact
output: interact

Q: Answer the following question given this paragraph: The final type of biomolecules that we will be looking at are the nucleic acids. Like carbohydrates and proteins, nucleic acids are complex polymers of a few simple building blocks. Nucleic acids provide the molecular blueprints for all proteins produced in living systems. We will explore the process by which this information is translated into functional structures later in this lesson. First, we will look at the structures of nucleic acids. Q: Which acids provide the molecular blueprints for all proteins produced in living systems? A:

OPTIONS:
- periodic acids
- amino acids
- nitrous acids
- nucleic acids

A: nucleic acids

input: OPTIONS:
- marble
- collagen
- cholesterol
- plaque Now, answer this question: Answer the following question given this paragraph: The fatty material inside the artery on the right is plaque. Notice how much narrower the artery has become. Less blood can flow through it than the normal artery. Q: What fatty material inside arteries can restrict blood flow in the artery? A:
A:
output: plaque

Question: Answer the following question given this paragraph: (b) Write a balanced chemical equation showing the products of the dissolution of Fe(NO3)3. Compare the processes that occur when methanol (CH3OH), hydrogen chloride (HCl), and sodium hydroxide (NaOH) dissolve in water. Write equations and prepare sketches showing the form in which each of these compounds is present in its respective solution. What is the expected electrical conductivity of the following solutions? (a) NaOH(aq) (b) HCl(aq) (c) C6H12O6(aq) (glucose) (d) NH3(l) 14. Why are most solid ionic compounds electrically nonconductive, whereas aqueous solutions of ionic compounds are good conductors? Would you expect a liquid (molten) ionic compound to be electrically conductive or nonconductive? Explain. Indicate the most important type of intermolecular attraction responsible for solvation in each of the following solutions: (a) the solutions in Figure 11.8 (b) methanol, CH3OH, dissolved in ethanol, C2H5OH (c) methane, CH4, dissolved in benzene, C6H6 (d) the polar halocarbon CF2Cl2 dissolved in the polar halocarbon CF2ClCFCl2 (e) O2(l) in N2(l) 11.3 Solubility 16. Suppose you are presented with a clear solution of sodium thiosulfate, Na2S2O3. How could you determine whether the solution is unsaturated, saturated, or supersaturated? 17. Supersaturated solutions of most solids in water are prepared by cooling saturated solutions. Supersaturated solutions of most gases in water are prepared by heating saturated solutions. Explain the reasons for the difference in the two procedures. Suggest an explanation for the observations that ethanol, C2H5OH, is completely miscible with water and that ethanethiol, C2H5SH, is soluble only to the extent of 1.5 g per 100 mL of water. Calculate the percent by mass of KBr in a saturated solution of KBr in water at 10 C. See Figure 11.17 for useful data, and report the computed percentage to one significant digit. Which of the following gases is expected to be most soluble in water? Explain your reasoning. (a) CH4 (b) CCl4. Q: Supersaturated solutions of most solids in water are prepared by cooling what? A:
OPTIONS:
- mineral solutions
- dense solutions
- plasma solutions
- saturated solutions
Answer:
saturated solutions