Answer the following question given this paragraph: Transition-metal fluorides usually have higher oxidation states than their iodides. For a given metal, the lowest-oxidation-state oxide is basic and the highest-oxidation-state oxide is acidic. Halides of the transition metals become more covalent with increasing oxidation state and are more prone to hydrolysis. Propose a method to prepare each of the following compounds: TiCl 4[(CH3)2O]2, Na2TiO3, V2O5, and Na2Cr2O7. Of the group 5 elements, which. Q: Halides of the transition metals become more covalent with increasing oxidation state and are more prone to what? Choices: - comproportionation - cycloaddition - decarbonylation - hydrolysis A:
hydrolysis
Answer the following question given this paragraph: Emigration is the movement of individuals out of a population. This decreases the population size and growth rate. Q: What is the term for the movement of individuals out of a population? Choices: - succession - colonization - immigration - emigration A:
emigration
Q: Answer the following question given this paragraph: Q: What is the largest and most complex algae Choices: - open algae - green algae - strange algae - brown algae A:
A: brown algae
Question: Answer the following question given this paragraph: The chemical energy that organisms need comes from food. Food consists of organic molecules that store energy in their chemical bonds. In terms of obtaining food for energy, there are two types of organisms: autotrophs and heterotrophs. Q: Food provides what type of energy needed by organisms, which is stored in bonds? Choices: - radiation energy - caffeine - calories - chemical energy A:
Answer: chemical energy
*Question*
Answer the following question given this paragraph: Figure 5.12 Light energy is absorbed by a chlorophyll molecule and is passed along a pathway to other chlorophyll molecules. The energy culminates in a molecule of chlorophyll found in the reaction center. The energy "excites" one of its electrons enough to leave the molecule and be transferred to a nearby primary electron acceptor. A molecule of water splits to release an electron, which is needed to replace the one donated. Oxygen and hydrogen ions are also formed from the splitting of water. Q: Light energy is absorbed by which kind of molecule? Choices: - inorganic - parasite - nutrient - chlorophyll A:
**Answer**
chlorophyll
(Q).
Answer the following question given this paragraph: When lactose is absent, a repressor protein binds to the operator. The operator is located between the promoter and the three lac operon genes. The protein blocks the binding of RNA polymerase to the promoter. As a result, the lac genes are not expressed. Q: When lactose is absent, a repressor protein binds to what? Choices: - differential - network - worker - operator A:
(A).
operator