Answer the following question given this paragraph: "Dry ice," or solid carbon dioxide, is a substance that sublimes at atmospheric pressures. Dry ice is very cold (78C) and so is used as a coolant for goods such as ice cream that must remain frozen during shipment. Because the dry ice sublimes rather than melting, there is no liquid mess associated with its change of state as the dry ice warms. As you may have seen in demonstrations, dry ice merely transforms from a solid to a cold, steamy looking gas. Ferrocene (an iron-containing compound) is usually purified by sublimation by gentle warming at atmospheric pressure. In the Figure below , you can see the reddish ferrocene crystals deposited on the outside of that tube. Deposition is the change of state from a gas to a solid. Q: What is the common term for solid carbon dioxide, which is used as a coolant? Choices: - blue ice - antifreeze - liquid nitrogen - dry ice A:
dry ice
Answer the following question given this paragraph: The Gaia hypothesis states that the biosphere is its own living organism. Q: What hypothesis states that the biosphere is its own living organism Choices: - the seager hypothesis - Big Bang theory - small world theory - the gaia hypothesis A:
the gaia hypothesis
Q: Answer the following question given this paragraph: Two other types of mass movement are slump and creep. They usually aren't as destructive as landslides and mudslides. Slump is the sudden movement of large blocks of rock and soil down a slope. Creep is the very slow movement of rock and soil down a slope. It causes trees, fence posts, and other structures to tilt downhill. Q: What type of mass movement is a sudden movement of large blocks of rock and soil down a slope? Choices: - deluge - resurgence - downturn - slump A:
A: slump
Question: Answer the following question given this paragraph: - Momentum equals mass multiplied by velocity. It is a vector, direction must be considered. Always define a positive direction and be consistent. Q: Mass multiplied by velocity equals what force? Choices: - kinetic energy - bounce - inertia - momentum A:
Answer: momentum
*Question*
Answer the following question given this paragraph: Many metals react with acids to produce hydrogen gas. A certain reaction produces 86.5 L of hydrogen gas at STP. How many moles of hydrogen were produced?. Q: Many metals react with acids to produce what gas? Choices: - neon - mercury - helium - hydrogen A:
**Answer**
hydrogen
(Question)
Answer the following question given this paragraph: Nucleic acids are biochemical compounds that include RNA (ribonucleic acid) and DNA (deoxyribonucleic acid). Nucleic acids consist of chains of small molecules called nucleotides. Nucleotides are the monomers of nucleic acids. A nucleotide is shown in Figure below . Q: What consist of chains of small molecules called nucleotides? Choices: - Atomic acids - structural acids - nitrous acids - nucleic acids A:
(Answer)
nucleic acids