Answer the following question given this paragraph: The hydrogen bonding that occurs in water leads to some unusual, but very important properties. Most molecular compounds that have a mass similar to water are gases at room temperature. Because of the strong hydrogen bonds, water molecules are able to stay condensed in the liquid state. The Figure below shows how the bent shape and two hydrogen atoms per molecule allows each water molecule to be able to hydrogen bond to two other molecules. Q: Most molecular compounds that have a mass similar to water are in what state of matter at room temperature? A:
OPTIONS:
- solid
- liquid
- vapor
- gas
gas

Answer the following question given this paragraph: RNA consists of just one chain of nucleotides. DNA consists of two chains. Nitrogen bases on the two chains of DNA form hydrogen bonds with each other. Hydrogen bonds are relatively weak bonds that form between a positively charged hydrogen atom in one molecule and a negatively charged atom in another molecule. Hydrogen bonds form only between adenine and thymine, and between guanine and cytosine. These bonds hold the two chains together and give DNA is characteristic double helix, or spiral, shape. Q: What has two chains of nucleotides, one more than rna? A:
OPTIONS:
- gna
- fna
- mna
- dna

Answer: dna

Question: Answer the following question given this paragraph: When compounds are synthesized, they often have contaminating materials mixed in with them. The process of recrystallization can be used to remove these impurities. The crystals are dissolved in a hot solvent, forming a solution. When the solvent is cooled the compound is no longer as soluble and will precipitate out of solution, leaving other materials still dissolved. Q: Recrystallization is a process that can remove what, which result when compounds are synthesized? A:
OPTIONS:
- chemicals
- substances
- minerals
- contaminants
Answer: contaminants

input with options: Answer the following question given this paragraph: http://www. explainthatstuff. com/how-geiger-counters-work. html. Q: The cecum is the first part of what structure, where wastes in a liquid state enter from the small intestine? A:
OPTIONS:
- duodenum
- esophagus
- appendix
- large intestine
output: large intestine

Q: Answer the following question given this paragraph: Other lipoproteins also transport lipids throughout the body, but different types of lipoproteins tend to serve different functions. We will discuss some of these differences in the section below on cholesterol and heart disease. Lipoproteins are often classified into five different groups based on their densities. In increasing order of density, these groups include chylomicrons, very-low-density lipoproteins (VLDL), intermediate-density lipoproteins (IDL), low-density lipoproteins (LDL), and high-density lipoproteins (HDL). Q: On what basis are lipoproteins classified? A:

OPTIONS:
- diameter
- mass
- weight
- density

A: density

Answer the following question given this paragraph: Calcium hydroxide and calcium carbonate are effective in neutralizing the effects of acid rain on lakes. Suggest other compounds that might be effective in treating lakes. Give a plausible reason to explain why Ca(OH)2 and CaCO3 are used. ♦️ Approximately 95% of the chlorine produced industrially comes from the electrolysis of sodium chloride solutions (brine): NaCl(aq) + H2O(l) Cl2(g) + H2(g) + NaOH(aq) Chlorine is a respiratory irritant whose presence is easily detected by its penetrating odor and greenishyellow color. One use for the chlorine produced is in the manufacture of hydrochloric acid. Q: Calcium hydroxide and calcium carbonate are effective in neutralizing the effects of what on lakes? A:
OPTIONS:
- oil rain
- ozone rain
- dioxide rain
- acid rain
acid rain